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Class, Holger

Holger Class

apl. Prof. Dr.-Ing.

Akademischer Oberrat
Institute for Modelling Hydraulic and Environmental Systems
Department of Hydromechanics and Modelling of Hydrosystems

Contact

+49 711 685 64678
+4971168560430
Email
Business card (VCF)

Pfaffenwaldring 61
70569 Stuttgart
Germany
Room: 1.012

Office Hours

By appointment only

Teaching

Fluid Mechanics 1 I Modul
Fluid Mechanics 2 I Modul
Environmental Fluid Mechanics 1 I Modul
Multiphase Modeling in Porous Media I Modul

Vita

Abitur

June 1991 in Münsingen

Academic Degrees

1997: Diploma (Dipl.-Ing), University of Stuttgart
2000: Doctoral Degree (Dr.-Ing.), Technical University of Braunschweig
2008: Habilitation (Dr.-Ing. habil.), University of Stuttgart

Academic Career

1998 - 2000: Doctoral Researcher, Institute of Computer Applications in Civil Engineering, Technical University of Braunschweig
2000 - 2004: Postdoctoral Researcher, Institute for Modelling Hydraulic and Environmental Systems, University of Stuttgart
since 2004: Deputy, Institute for Modelling Hydraulic and Environmental Systems, University of Stuttgart
since 2011: Appointment as "außerplanmäßiger Professor", Institute for Modelling Hydraulic and Environmental Systems,
University of Stuttgart

Main research subject

Model concepts for multi-component processes with phase transitions

Awards and Recognitions

1999: 1st prize of the John F. Kennedy Student Paper competition at the 28th congress of the International Association for Hydraulic Research
2006: University of Stuttgart Environmental Engineering student award for
best lecture "Hydromechanics"

Publikations

(Journal-) Articles
1. Class, H., Keim, L., Schirmer, L., Strauch, B., Wendel, K., & Zimmer, M. (2023). Seasonal Dynamics of Gaseous CO2 Concentrations in a Karst Cave Correspond with Aqueous Concentrations in a Stagnant Water Column. Geosciences, 13, 51. https://doi.org/103390/geosciences13020051
  Abstract
  Dissolved CO2 in karst water is the key driving force of karstification. Replenishment of CO2 concentrations in karst water occurs by meteoric water that percolates through the vadose zone, where CO2 produced from microbial activity is dissolved. CO2 can thus be transported with the percolating water or in the gas phase due to ventilation in karst systems. We measured seasonally fluctuating CO2 concentrations in the air of a karst cave and their influence on aqueous CO2 con- centrations in different depths of a stagnant water column. The observed data were compared to numerical simulations. The data give evidence that density-driven enhanced dissolution of gaseous CO2 at the karst water table is the driving force for a fast increase of aqueous CO2 during periods of high gaseous concentrations in the cave, whereas during periods of lower gaseous concentrations, the decline of aqueous CO2 is limited to shallow water depths in the order of 1 m. This is significant because density-driven CO2 dissolution has not been previously considered relevant for karst hy- drology in the literature. Attempts at reproducing the measured aqueous CO2 concentrations with numerical modeling revealed challenges related to computational demands, discretization, and the high sensitivity of the processes to tiny density gradients.
  BibTeX
  @article{paper-2023-class-tiefenhoehle, abstract = {Dissolved CO2 in karst water is the key driving force of karstification. Replenishment of CO2 concentrations in karst water occurs by meteoric water that percolates through the vadose zone, where CO2 produced from microbial activity is dissolved. CO2 can thus be transported with the percolating water or in the gas phase due to ventilation in karst systems. We measured seasonally fluctuating CO2 concentrations in the air of a karst cave and their influence on aqueous CO2 con- centrations in different depths of a stagnant water column. The observed data were compared to numerical simulations. The data give evidence that density-driven enhanced dissolution of gaseous CO2 at the karst water table is the driving force for a fast increase of aqueous CO2 during periods of high gaseous concentrations in the cave, whereas during periods of lower gaseous concentrations, the decline of aqueous CO2 is limited to shallow water depths in the order of 1 m. This is significant because density-driven CO2 dissolution has not been previously considered relevant for karst hy- drology in the literature. Attempts at reproducing the measured aqueous CO2 concentrations with numerical modeling revealed challenges related to computational demands, discretization, and the high sensitivity of the processes to tiny density gradients.}, author = {Class, Holger and Keim, Leon and Schirmer, Larissa and Strauch, Bettina and Wendel, Kai and Zimmer, Martin}, doi = {103390/geosciences13020051}, journal = {Geosciences}, pages = 51, title = {Seasonal Dynamics of Gaseous CO2 Concentrations in a Karst Cave Correspond with Aqueous Concentrations in a Stagnant Water Column}, url = {https://www.mdpi.com/2076-3263/13/2/51/pdf}, volume = 13, year = 2023 }
  Link
  https://www.mdpi.com/2076-3263/13/2/51/pdf
2. Tsinober, A., Rosenzweig, R., Class, H., Helmig, R., & Shavit, U. (2022). The Role of Mixed Convection and Hydrodynamic Dispersion During CO2 Dissolution in Saline Aquifers: A Numerical Study. Water Resources Research, 58(3), e2021WR030494. https://doi.org/10.1029/2021WR030494
  Abstract
  Abstract Dissolution trapping plays a significant role in CO2 geological storage. When CO2 dissolves in aquifer brines, the aqueous solution is heavier than the underlying resident brine. This results in convective instability in the form of CO2-rich fingers, which accelerates dissolution. It was recently shown that background flow affects CO2 dissolution by suppressing the development of convective fingers. However, there was a discrepancy between computational results and measurements, with the computational results demonstrating a decrease in the dissolution rate and the laboratory measurements showing no significant effect. Here, we attempted to understand this difference by exploring the relations between the transport mechanisms that facilitate convective mixing. We investigated the role of background flow by using numerical simulations that were validated by laboratory measurements and analytical solutions. Simulations were generated for the same porous medium and fluid pair used in the experiments, keeping the Rayleigh number constant, while changing the background velocity and the Peclet number. Studying the flux components revealed three distinct regimes characterized by the Peclet to Rayleigh ratio Pe/Ra. When Pe/Ra < 0.77, natural convection dominated, and dissolution remained approximately constant. When the background flow was large (Pe/Ra > 2), dissolution was controlled by pure forced convection and increased with Pe/Ra. In the intermediate range (0.77 < Pe/Ra < 2), both natural convection and forced convection were important.
  BibTeX
  @article{https://doi.org/10.1029/2021WR030494, abstract = {Abstract Dissolution trapping plays a significant role in CO2 geological storage. When CO2 dissolves in aquifer brines, the aqueous solution is heavier than the underlying resident brine. This results in convective instability in the form of CO2-rich fingers, which accelerates dissolution. It was recently shown that background flow affects CO2 dissolution by suppressing the development of convective fingers. However, there was a discrepancy between computational results and measurements, with the computational results demonstrating a decrease in the dissolution rate and the laboratory measurements showing no significant effect. Here, we attempted to understand this difference by exploring the relations between the transport mechanisms that facilitate convective mixing. We investigated the role of background flow by using numerical simulations that were validated by laboratory measurements and analytical solutions. Simulations were generated for the same porous medium and fluid pair used in the experiments, keeping the Rayleigh number constant, while changing the background velocity and the Peclet number. Studying the flux components revealed three distinct regimes characterized by the Peclet to Rayleigh ratio Pe/Ra. When Pe/Ra < 0.77, natural convection dominated, and dissolution remained approximately constant. When the background flow was large (Pe/Ra > 2), dissolution was controlled by pure forced convection and increased with Pe/Ra. In the intermediate range (0.77 < Pe/Ra < 2), both natural convection and forced convection were important.}, author = {Tsinober, Avihai and Rosenzweig, Ravid and Class, Holger and Helmig, Rainer and Shavit, Uri}, doi = {https://doi.org/10.1029/2021WR030494}, eprint = {https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2021WR030494}, journal = {Water Resources Research}, month = {03}, note = {e2021WR030494 2021WR030494}, number = 3, pages = {e2021WR030494}, title = {The Role of Mixed Convection and Hydrodynamic Dispersion During CO2 Dissolution in Saline Aquifers: A Numerical Study}, url = {https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2021WR030494}, volume = 58, year = 2022 }
  Link
  https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2021WR030494
3. Weinhardt, F., Deng, J., Hommel, J., Vahid Dastjerdi, S., Gerlach, R., Steeb, H., & Class, H. (2022). Spatiotemporal Distribution of Precipitates and Mineral Phase Transition During Biomineralization Affect Porosity–Permeability Relationships. Transport in Porous Media, 143(2), 527--549. https://doi.org/10.1007/s11242-022-01782-8
  Abstract
  Enzymatically induced calcium carbonate precipitation is a promising geotechnique with the potential, for example, to seal leakage pathways in the subsurface or to stabilize soils. Precipitation of calcium carbonate in a porous medium reduces the porosity and, consequently, the permeability. With pseudo-2D microfluidic experiments, including pressure monitoring and, for visualization, optical microscopy and X-ray computed tomography, pore-space alterations were reliably related to corresponding hydraulic responses. The study comprises six experiments with two different pore structures, a simple, quasi-1D structure, and a 2D structure. Using a continuous injection strategy with either constant or step-wise reduced flow rates, we identified key mechanisms that significantly influence the relationship between porosity and permeability. In the quasi-1D structure, the location of precipitates is more relevant to the hydraulic response (pressure gradients) than the overall porosity change. In the quasi-2D structure, this is different, because flow can bypass locally clogged regions, thus leading to steadier porosity–permeability relationships. Moreover, in quasi-2D systems, during continuous injection, preferential flow paths can evolve and remain open. Classical porosity–permeability power-law relationships with constant exponents cannot adequately describe this phenomenon. We furthermore observed coexistence and transformation of different polymorphs of calcium carbonate, namely amorphous calcium carbonate, vaterite, and calcite and discuss their influence on the observed development of preferential flow paths. This has so far not been accounted for in the state-of-the-art approaches for porosity–permeability relationships during calcium carbonate precipitation in porous media.
  BibTeX
  @article{weinhardt_spatiotemporal_2022, abstract = {Enzymatically induced calcium carbonate precipitation is a promising geotechnique with the potential, for example, to seal leakage pathways in the subsurface or to stabilize soils. Precipitation of calcium carbonate in a porous medium reduces the porosity and, consequently, the permeability. With pseudo-2D microfluidic experiments, including pressure monitoring and, for visualization, optical microscopy and X-ray computed tomography, pore-space alterations were reliably related to corresponding hydraulic responses. The study comprises six experiments with two different pore structures, a simple, quasi-1D structure, and a 2D structure. Using a continuous injection strategy with either constant or step-wise reduced flow rates, we identified key mechanisms that significantly influence the relationship between porosity and permeability. In the quasi-1D structure, the location of precipitates is more relevant to the hydraulic response (pressure gradients) than the overall porosity change. In the quasi-2D structure, this is different, because flow can bypass locally clogged regions, thus leading to steadier porosity–permeability relationships. Moreover, in quasi-2D systems, during continuous injection, preferential flow paths can evolve and remain open. Classical porosity–permeability power-law relationships with constant exponents cannot adequately describe this phenomenon. We furthermore observed coexistence and transformation of different polymorphs of calcium carbonate, namely amorphous calcium carbonate, vaterite, and calcite and discuss their influence on the observed development of preferential flow paths. This has so far not been accounted for in the state-of-the-art approaches for porosity–permeability relationships during calcium carbonate precipitation in porous media.}, author = {Weinhardt, Felix and Deng, Jingxuan and Hommel, Johannes and Vahid Dastjerdi, Samaneh and Gerlach, Robin and Steeb, Holger and Class, Holger}, doi = {10.1007/s11242-022-01782-8}, issn = {1573-1634}, journal = {Transport in Porous Media}, language = {en}, month = {06}, number = 2, pages = {527--549}, title = {Spatiotemporal {Distribution} of {Precipitates} and {Mineral} {Phase} {Transition} {During} {Biomineralization} {Affect} {Porosity}–{Permeability} {Relationships}}, url = {https://doi.org/10.1007/s11242-022-01782-8}, urldate = {2022-07-08}, volume = 143, year = 2022 }
  Link
  https://doi.org/10.1007/s11242-022-01782-8
4. von Wolff, L., Weinhardt, F., Class, H., Hommel, J., & Rohde, C. (2021). Investigation of Crystal Growth in Enzymatically Induced Calcite Precipitation by Micro-Fluidic Experimental Methods and Comparison with Mathematical Modeling. Transport in Porous Media, 137(2), Article 2. https://doi.org/10.1007/s11242-021-01560-y
  Abstract
  Enzymatically induced calcite precipitation (EICP) is an engineering technology that allows for targeted reduction of porosity in a porous medium by precipitation of calcium carbonates. This might be employed for reducing permeability in order to seal flow paths or for soil stabilization. This study investigates the growth of calcium-carbonate crystals in a micro-fluidic EICP setup and relies on experimental results of precipitation observed over time and under flow-through conditions in a setup of four pore bodies connected by pore throats. A phase-field approach to model the growth of crystal aggregates is presented, and the corresponding simulation results are compared to the available experimental observations. We discuss the model's capability to reproduce the direction and volume of crystal growth. The mechanisms that dominate crystal growth are complex depending on the local flow field as well as on concentrations of solutes. We have good agreement between experimental data and model results. In particular, we observe that crystal aggregates prefer to grow in upstream flow direction and toward the center of the flow channels, where the volume growth rate is also higher due to better supply.
  BibTeX
  @article{vonWolff2021-Weinhardt, abstract = {Enzymatically induced calcite precipitation (EICP) is an engineering technology that allows for targeted reduction of porosity in a porous medium by precipitation of calcium carbonates. This might be employed for reducing permeability in order to seal flow paths or for soil stabilization. This study investigates the growth of calcium-carbonate crystals in a micro-fluidic EICP setup and relies on experimental results of precipitation observed over time and under flow-through conditions in a setup of four pore bodies connected by pore throats. A phase-field approach to model the growth of crystal aggregates is presented, and the corresponding simulation results are compared to the available experimental observations. We discuss the model's capability to reproduce the direction and volume of crystal growth. The mechanisms that dominate crystal growth are complex depending on the local flow field as well as on concentrations of solutes. We have good agreement between experimental data and model results. In particular, we observe that crystal aggregates prefer to grow in upstream flow direction and toward the center of the flow channels, where the volume growth rate is also higher due to better supply.}, author = {von Wolff, Lars and Weinhardt, Felix and Class, Holger and Hommel, Johannes and Rohde, Christian}, day = 24, doi = {10.1007/s11242-021-01560-y}, issn = {1573-1634}, journal = {Transport in Porous Media}, month = {02}, number = 2, publisher = {Springer Science and Business Media LLC}, title = {Investigation of Crystal Growth in Enzymatically Induced Calcite Precipitation by Micro-Fluidic Experimental Methods and Comparison with Mathematical Modeling}, url = {https://doi.org/10.1007/s11242-021-01560-y}, volume = 137, year = 2021 }
  Link
  https://doi.org/10.1007/s11242-021-01560-y
5. Wagner, A., Eggenweiler, E., Weinhardt, F., Trivedi, Z., Krach, D., Lohrmann, C., Jain, K., Karadimitriou, N., Bringedal, C., Voland, P., Holm, C., Class, H., Steeb, H., & Rybak, I. (2021). Permeability Estimation of Regular Porous Structures: A Benchmark for Comparison of Methods. Transport in Porous Media, 138(1), 1–23. https://doi.org/10.1007/s11242-021-01586-2
  - BibTeX
  - Link
  BibTeX
  @article{lh2-2021-weinhardt-benchmark, author = {Wagner, Arndt and Eggenweiler, Elissa and Weinhardt, Felix and Trivedi, Zubin and Krach, David and Lohrmann, Christoph and Jain, Kartik and Karadimitriou, Nikolaus and Bringedal, Carina and Voland, Paul and Holm, Christian and Class, Holger and Steeb, Holger and Rybak, Iryna}, doi = {10.1007/s11242-021-01586-2}, journal = {Transport in Porous Media}, month = {04}, number = 1, pages = {1-23}, title = {Permeability Estimation of Regular Porous Structures: A Benchmark for Comparison of Methods}, url = {https://doi.org/10.1007/s11242-021-01586-2}, volume = 138, year = 2021 }
  Link
  https://doi.org/10.1007/s11242-021-01586-2
6. Weinhardt, F., Class, H., Dastjerdi, S. V., Karadimitriou, N., Lee, D., & Steeb, H. (2021). Experimental Methods and Imaging for Enzymatically Induced Calcite Precipitation in a microfluidic cell. Water Resources Research, 57, e2020WR029361. https://doi.org/doi.org/10.1029/2020WR029361
  Abstract
  Abstract Enzymatically induced calcite precipitation (EICP) in porous media can be used as an engineering option to achieve precipitation in the pore space, for example, aiming at a targeted sealing of existing flow paths. This is accomplished through a porosity and consequent permeability alteration. A major source of uncertainty in modeling EICP is in the quantitative description of permeability alteration due to precipitation. This report presents methods for investigating experimentally the time-resolved effects of growing precipitates on porosity and permeability on the pore scale, in a poly-di-methyl-siloxane microfluidic flow cell. These methods include the design and production of the microfluidic cells, the preparation and usage of the chemical solutions, the injection strategy, and the monitoring of pressure drops for given fluxes for the determination of permeability. EICP imaging methods are explained, including optical microscopy and X-ray microcomputed tomography (XRCT), and the corresponding image processing and analysis. We present and discuss a new experimental procedure using a microfluidic cell, as well as the general perspectives for further experimental and numerical simulation studies on induced calcite precipitation. The results of this study show the enormous benefits and insights achieved by combining both light microscopy and XRCT with hydraulic measurements in microfluidic chips. This allows for a quantitative analysis of the evolution of precipitates with respect to their size and shape, while monitoring their influence on permeability. We consider this to be an improvement of the existing methods in the literature regarding the interpretation of recorded data (pressure, flux, and visualization) during pore morphology alteration.
  BibTeX
  @article{Weinhardtetal2021, abstract = {Abstract Enzymatically induced calcite precipitation (EICP) in porous media can be used as an engineering option to achieve precipitation in the pore space, for example, aiming at a targeted sealing of existing flow paths. This is accomplished through a porosity and consequent permeability alteration. A major source of uncertainty in modeling EICP is in the quantitative description of permeability alteration due to precipitation. This report presents methods for investigating experimentally the time-resolved effects of growing precipitates on porosity and permeability on the pore scale, in a poly-di-methyl-siloxane microfluidic flow cell. These methods include the design and production of the microfluidic cells, the preparation and usage of the chemical solutions, the injection strategy, and the monitoring of pressure drops for given fluxes for the determination of permeability. EICP imaging methods are explained, including optical microscopy and X-ray microcomputed tomography (XRCT), and the corresponding image processing and analysis. We present and discuss a new experimental procedure using a microfluidic cell, as well as the general perspectives for further experimental and numerical simulation studies on induced calcite precipitation. The results of this study show the enormous benefits and insights achieved by combining both light microscopy and XRCT with hydraulic measurements in microfluidic chips. This allows for a quantitative analysis of the evolution of precipitates with respect to their size and shape, while monitoring their influence on permeability. We consider this to be an improvement of the existing methods in the literature regarding the interpretation of recorded data (pressure, flux, and visualization) during pore morphology alteration.}, author = {Weinhardt, Felix and Class, Holger and Dastjerdi, Samaneh Vahid and Karadimitriou, Nikolaos and Lee, Dongwon and Steeb, Holger}, doi = {doi.org/10.1029/2020WR029361}, eprint = {https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2020WR029361}, journal = {Water Resources Research}, month = {03}, note = {e2020WR029361 2020WR029361}, pages = {e2020WR029361}, publisher = {American Geophysical Union (AGU)}, title = {Experimental Methods and Imaging for Enzymatically Induced Calcite Precipitation in a microfluidic cell}, url = {https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2020WR029361}, volume = 57, year = 2021 }
  Link
  https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2020WR029361
7. Emmert, S., Davis, K., Gerlach, R., & Class, H. (2020). The Role of Retardation, Attachment and Detachment Processes during Microbial Coal-Bed Methane Production after Organic Amendment. Water, 12(11), Article 11. https://doi.org/10.3390/w12113008
  - BibTeX
  - Link
  BibTeX
  @article{emmert2020role, article-number = {3008}, author = {Emmert, Simon and Davis, Katherine and Gerlach, Robin and Class, Holger}, doi = {10.3390/w12113008}, issn = {2073-4441}, journal = {Water}, month = {10}, number = 11, publisher = {{MDPI} {AG}}, title = {The Role of Retardation, Attachment and Detachment Processes during Microbial Coal-Bed Methane Production after Organic Amendment}, url = {https://www.mdpi.com/2073-4441/12/11/3008}, volume = 12, year = 2020 }
  Link
  https://www.mdpi.com/2073-4441/12/11/3008
8. Emmert, S., Class, H., Davis, K. J., & Gerlach, R. (2020). Importance of specific substrate utilization by microbes in microbially enhanced coal-bed methane production: A modelling study. International Journal of Coal Geology, 229, 103567. https://doi.org/10.1016/j.coal.2020.103567
  - BibTeX
  - Link
  BibTeX
  @article{emmert2020importance, author = {Emmert, Simon and Class, Holger and Davis, Katherine J and Gerlach, Robin}, doi = {https://doi.org/10.1016/j.coal.2020.103567}, issn = {0166-5162}, journal = {International Journal of Coal Geology}, month = {09}, pages = 103567, publisher = {Elsevier}, title = {Importance of specific substrate utilization by microbes in microbially enhanced coal-bed methane production: A modelling study}, url = {http://www.sciencedirect.com/science/article/pii/S0166516220305632}, volume = 229, year = 2020 }
  Link
  http://www.sciencedirect.com/science/article/pii/S0166516220305632
9. Hommel, J., Akyel, A., Frieling, Z., Phillips, A. J., Gerlach, R., Cunningham, A. B., & Class, H. (2020). A Numerical Model for Enzymatically Induced Calcium Carbonate Precipitation. Applied Sciences, 10(13), 4538. https://doi.org/10.3390/app10134538
  - BibTeX
  BibTeX
  @article{Hommel2020, author = {Hommel, Johannes and Akyel, Arda and Frieling, Zachary and Phillips, Adrienne J. and Gerlach, Robin and Cunningham, Alfred B. and Class, Holger}, doi = {10.3390/app10134538}, journal = {Applied Sciences}, month = {06}, number = 13, pages = 4538, title = {A Numerical Model for Enzymatically Induced Calcium Carbonate Precipitation}, volume = 10, year = 2020 }
10. Beck, M., Rinaldi, A. P., Flemisch, B., & Class, H. (2020). Accuracy of fully coupled and sequential approaches for modeling hydro- and geomechanical processes. Computational Geosciences, 24(4), 1707--1723. https://doi.org/10.1007/s10596-020-09987-w
  Abstract
  Subsurface flow and geomechanics are often modeled with sequential approaches. This can be computationally beneficial compared with fully coupled schemes, while it requires usually compromises in numerical accuracy, at least when the sequential scheme is non-iterative. We discuss the influence of the choice of scheme on the numerical accuracy and the expected computational effort based on a comparison of a fully coupled scheme, a scheme employing a one-way coupling, and an iterative scheme using a fixed-stress split for two subsurface injection scenarios. All these schemes were implemented in the numerical simulator DuMux. This study identifies conditions of problem settings where differences due to the choice of the model approach are as important as differences in geologic features. It is shown that in particular transient and multiphase flow, effects can be causing significant deviations between non-iterative and iterative sequential schemes, which might be in the same order of magnitude as geologic uncertainty. An iterated fixed-stress split has the same numerical accuracy as a fully coupled scheme but only for a certain number of iterations which might use up the computational advantage of solving two smaller systems of equations rather than a big monolithical one.
  BibTeX
  @article{beck_accuracy_2020, abstract = {Subsurface flow and geomechanics are often modeled with sequential approaches. This can be computationally beneficial compared with fully coupled schemes, while it requires usually compromises in numerical accuracy, at least when the sequential scheme is non-iterative. We discuss the influence of the choice of scheme on the numerical accuracy and the expected computational effort based on a comparison of a fully coupled scheme, a scheme employing a one-way coupling, and an iterative scheme using a fixed-stress split for two subsurface injection scenarios. All these schemes were implemented in the numerical simulator DuMux. This study identifies conditions of problem settings where differences due to the choice of the model approach are as important as differences in geologic features. It is shown that in particular transient and multiphase flow, effects can be causing significant deviations between non-iterative and iterative sequential schemes, which might be in the same order of magnitude as geologic uncertainty. An iterated fixed-stress split has the same numerical accuracy as a fully coupled scheme but only for a certain number of iterations which might use up the computational advantage of solving two smaller systems of equations rather than a big monolithical one.}, author = {Beck, M. and Rinaldi, A. P. and Flemisch, B. and Class, H.}, doi = {10.1007/s10596-020-09987-w}, issn = {1573-1499}, journal = {Computational Geosciences}, language = {en}, month = {08}, number = 4, pages = {1707--1723}, publisher = {Springer Science and Business Media {LLC}}, title = {Accuracy of fully coupled and sequential approaches for modeling hydro- and geomechanical processes}, url = {https://doi.org/10.1007/s10596-020-09987-w}, urldate = {2020-11-17}, volume = 24, year = 2020 }
  Link
  https://doi.org/10.1007/s10596-020-09987-w
11. Class, H., Weishaupt, K., & Trötschler, O. (2020). Experimental and Simulation Study on Validating a Numerical Model for CO2 Density-Driven Dissolution in Water. Water, 12(3), 738. https://doi.org/10.3390/w12030738
  Abstract
  Carbon dioxide density-driven dissolution in a water-filled laboratory flume of the dimensions 60 cm length, 40 cm height, 1 cm thickness, was visualized using a pH-sensitive color indicator. We focus on atmospheric pressure conditions, like in caves where CO2 concentrations are typically higher. Varying concentrations of carbon dioxide were applied as boundary conditions at the top of the experimental setup, leading to the onset of convective fingering at differing times. The data were used to validate a numerical model implemented in the numerical simulator DuMux. The model solves the Navier–Stokes equations for density-induced water flow with concentration-dependent fluid density and a transport equation, including advective and diffusive processes for the carbon dioxide dissolved in water. The model was run in 2D, 3D, and pseudo-3D on two different grids. Without any calibration or fitting of parameters, the results of the comparison between experiment and simulation show satisfactory agreement with respect to the onset time of convective fingering, and the number and the dynamics of the fingers. Grid refinement matters, in particular, in the uppermost part where fingers develop. The 2D simulations consistently overestimated the fingering dynamics. This successful validation of the model is the prerequisite for employing it in situations with background flow and for a future study of karstification mechanisms related to CO2-induced fingering in caves.
  BibTeX
  @article{class_experimental_2020, abstract = {Carbon dioxide density-driven dissolution in a water-filled laboratory flume of the dimensions 60 cm length, 40 cm height, 1 cm thickness, was visualized using a pH-sensitive color indicator. We focus on atmospheric pressure conditions, like in caves where CO2 concentrations are typically higher. Varying concentrations of carbon dioxide were applied as boundary conditions at the top of the experimental setup, leading to the onset of convective fingering at differing times. The data were used to validate a numerical model implemented in the numerical simulator DuMux. The model solves the Navier\–Stokes equations for density-induced water flow with concentration-dependent fluid density and a transport equation, including advective and diffusive processes for the carbon dioxide dissolved in water. The model was run in 2D, 3D, and pseudo-3D on two different grids. Without any calibration or fitting of parameters, the results of the comparison between experiment and simulation show satisfactory agreement with respect to the onset time of convective fingering, and the number and the dynamics of the fingers. Grid refinement matters, in particular, in the uppermost part where fingers develop. The 2D simulations consistently overestimated the fingering dynamics. This successful validation of the model is the prerequisite for employing it in situations with background flow and for a future study of karstification mechanisms related to CO2-induced fingering in caves.}, author = {Class, Holger and Weishaupt, Kilian and Trötschler, Oliver}, copyright = {http://creativecommons.org/licenses/by/3.0/}, doi = {10.3390/w12030738}, journal = {Water}, language = {en}, month = {03}, note = {Number: 3 publisher = {{MDPI} {AG}},Publisher: Multidisciplinary Digital Publishing Institute}, number = 3, pages = 738, title = {Experimental and Simulation Study on Validating a Numerical Model for CO2 Density-Driven Dissolution in Water}, url = {https://www.mdpi.com/2073-4441/12/3/738}, urldate = {2020-11-17}, volume = 12, year = 2020 }
  Link
  https://www.mdpi.com/2073-4441/12/3/738
12. Seitz, G., Helmig, R., & Class, H. (2020). A numerical modeling study on the influence of porosity changes during thermochemical heat storage. Applied Energy, 259, 114152. https://doi.org/10.1016/j.apenergy.2019.114152
  - BibTeX
  - Link
  BibTeX
  @article{Seitz-Seitz-2020-01, author = {Seitz, Gabriele and Helmig, Rainer and Class, Holger}, doi = {10.1016/j.apenergy.2019.114152}, issn = {0306-2619}, journal = {Applied Energy}, month = {02}, pages = 114152, title = {A numerical modeling study on the influence of porosity changes during thermochemical heat storage}, url = {http://www.sciencedirect.com/science/article/pii/S0306261919318392}, volume = 259, year = 2020 }
  Link
  http://www.sciencedirect.com/science/article/pii/S0306261919318392
13. Gläser, D., Flemisch, B., Helmig, R., & Class, H. (2019). A hybrid-dimensional discrete fracture model for non-isothermal two-phase flow in fractured porous media. GEM - International Journal on Geomathematics, 10(1), 5. https://doi.org/10.1007/s13137-019-0116-8
  - BibTeX
  - Link
  BibTeX
  @article{Glaeser-Glaeser-2019-01, author = {Gläser, Dennis and Flemisch, Bernd and Helmig, Rainer and Class, Holger}, doi = {10.1007/s13137-019-0116-8}, issn = {1869-2680}, journal = {GEM - International Journal on Geomathematics}, language = {en}, month = {01}, number = 1, pages = 5, title = {A hybrid-dimensional discrete fracture model for non-isothermal two-phase flow in fractured porous media}, url = {https://doi.org/10.1007/s13137-019-0116-8}, urldate = {2020-01-10}, volume = 10, year = 2019 }
  Link
  https://doi.org/10.1007/s13137-019-0116-8
14. Cunningham, A. B., Class, H., Ebigbo, A., Gerlach, R., Phillips, A., & Hommel, J. (2019). Field-scale modeling of microbially induced calcite precipitation. Computational Geosciences, tbd. https://doi.org/10.1007/s10596-018-9797-6
  - BibTeX
  - Link
  BibTeX
  @article{NULL, author = {Cunningham, Alfred B. and Class, Holger and Ebigbo, Anozie and Gerlach, Robin and Phillips, Adrienne and Hommel, Johannes}, doi = {10.1007/s10596-018-9797-6}, journal = {Computational Geosciences}, month = {04}, note = {, IWS2ID=4551 , Partnerinstitution: Montana State University , Partneraddress: Bozeman, Montana, USA }, page = {tbd}, title = {Field-scale modeling of microbially induced calcite precipitation}, url = {http://link.springer.com/article/10.1007/s10596-018-9797-6}, volume = {tbd}, year = 2019 }
  Link
  http://link.springer.com/article/10.1007/s10596-018-9797-6
15. Koch, T., Gläser, D., Weishaupt, K., Ackermann, S., Beck, M., Becker, B., Burbulla, S., Class, H., Coltman, E., Fetzer, T., Flemisch, B., Grüninger, C., Heck, K., Hommel, J., Kurz, T., Lipp, M., Mohammadi, F., Schneider, M., Seitz, G., … Weinhardt, F. (2018). DuMuX 3.0.0. https://doi.org/10.5281/zenodo.2479595
  - BibTeX
  BibTeX
  @article{koch2018dumux, author = {Koch, Timo and Gläser, Dennis and Weishaupt, Kilian and Ackermann, Sina and Beck, Martin and Becker, Beatrix and Burbulla, S. and Class, Holger and Coltman, Edward and Fetzer, Thomas and Flemisch, Bernd and Grüninger, Christoph and Heck, Katharina and Hommel, Johannes and Kurz, Theresa and Lipp, Melanie and Mohammadi, Farid and Schneider, Martin and Seitz, Gabriele and Scholz, Simon and Weinhardt, Felix}, doi = {10.5281/zenodo.2479595}, title = {DuMuX 3.0.0}, year = 2018 }
16. Gläser, D., Helmig, R., Flemisch, B., & Class, H. (2017). A discrete fracture model for two-phase flow in fractured porous media. Advances in Water Resources, 110. https://doi.org/10.1016/j.advwatres.2017.10.031
  - BibTeX
  BibTeX
  @article{NULL, author = {Gläser, Dennis and Helmig, Rainer and Flemisch, Bernd and Class, Holger}, doi = {10.1016/j.advwatres.2017.10.031}, journal = {Advances in Water Resources}, month = {12}, note = {, IWS2ID=4485 }, page = {335-348}, title = {A discrete fracture model for two-phase flow in fractured porous media}, volume = 110, year = 2017 }
17. Kleinknecht, S., Class, H., & Braun, J. (2017). Experimental study on retardation of a heavy NAPL vapor in partially saturated porous media. Hydrol. Earth Syst. Sci. Discuss., 21.
  - BibTeX
  BibTeX
  @article{kleinknecht2017experimental, author = {Kleinknecht, Simon and Class, Holger and Braun, Jürgen}, journal = {Hydrol. Earth Syst. Sci. Discuss. }, month = {03}, note = {, IWSID=3459 }, page = {1381-1396}, title = {Experimental study on retardation of a heavy NAPL vapor in partially saturated porous media}, volume = 21, year = 2017 }
18. Kissinger, A., Noack, V., Knopf, S., Konrad, W., Scheer, D., & Class, H. (2016). Regional-scale brine migration along vertical pathways due to CO2 injection - Part 2: a simulated case study in the North German Basin. Hydrology and Earth System Sciences (HESS).
  - BibTeX
  BibTeX
  @article{kissinger2016, author = {Kissinger, Alexander and Noack, Vera and Knopf, Stefan and Konrad, Wilfried and Scheer, Dirk and Class, Holger}, journal = {Hydrology and Earth System Sciences (HESS)}, month = {12}, note = {, IWS2ID=4412 , Partnerinstitution: Bundesanstalt für Geowissenschaften und Rohstoffe (BGR), Dialogik }, title = {Regional-scale brine migration along vertical pathways due to CO2 injection - Part 2: a simulated case study in the North German Basin}, year = 2016 }
19. Weishaupt, K., Bordenave, A., Atteia, O., & Class, H. (2016). Numerical Investigation on the Benefits of Preheating for an Increased Thermal Radius of Influence During Steam Injection in Saturated Soil. Transport in Porous Media. https://doi.org/10.1007/s11242-016-0624-z
  - BibTeX
  - Link
  BibTeX
  @article{NULL, author = {Weishaupt, Kilian and Bordenave, Alexandre and Atteia, Olivier and Class, Holger}, doi = {10.1007/s11242-016-0624-z}, journal = {Transport in Porous Media}, month = {01}, note = {, IWS2ID=4343 }, title = {Numerical Investigation on the Benefits of Preheating for an Increased Thermal Radius of Influence During Steam Injection in Saturated Soil}, url = {http://link.springer.com/article/10.1007/s11242-016-0624-z}, year = 2016 }
  Link
  http://link.springer.com/article/10.1007/s11242-016-0624-z
20. Hommel, J., Ebigbo, A., Gerlach, R., Cunningham, A. B., Helmig, R., & Class, H. (2016). Finding a balance between accuracy and effort for modeling biomineralization. Energy Procedia, 97. https://doi.org/10.1016/j.egypro.2016.10.028
  - BibTeX
  - Link
  BibTeX
  @article{NULL, author = {Hommel, Johannes and Ebigbo, Anozie and Gerlach, Robin and Cunningham, Alfred B. and Helmig, Rainer and Class, Holger}, doi = {10.1016/j.egypro.2016.10.028}, journal = {Energy Procedia}, month = {11}, note = {, IWS2ID=4408 , Partnerinstitution: Montana State University }, page = {379-386}, title = {Finding a balance between accuracy and effort for modeling biomineralization}, url = {http://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2016/Hommel_EgyPro_2016.pdf}, volume = 97, year = 2016 }
  Link
  http://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2016/Hommel_EgyPro_2016.pdf
21. Gläser, D., Dell’Oca, A., Tatomir, A., Bensabat, J., Class, H., Guadagnini, A., Helmig, R., McDermott, C., Riva, M., & Sauter, M. (2016). An Approach Towards a FEP-based Model for Risk Assessment for Hydraulic Fracturing Operations. Energy Procedia, 97, 387--394. https://doi.org/10.1016/j.egypro.2016.10.030
  - BibTeX
  - Link
  BibTeX
  @article{Glaeser-Glaeser-2016-01, author = {Gläser, D. and Dell’Oca, A. and Tatomir, A. and Bensabat, J. and Class, H. and Guadagnini, A. and Helmig, R. and McDermott, C. and Riva, M. and Sauter, M.}, doi = {10.1016/j.egypro.2016.10.030}, issn = {1876-6102}, journal = {Energy Procedia}, language = {en}, month = {11}, note = {European Geosciences Union General Assembly 2016, EGU Division Energy, Resources \& the Environment (ERE)}, pages = {387--394}, series = {European {Geosciences} {Union} {General} {Assembly} 2016, {EGU} {Division} {Energy}, {Resources} \& the {Environment} ({ERE})}, title = {An {Approach} {Towards} a {FEP}-based {Model} for {Risk} {Assessment} for {Hydraulic} {Fracturing} {Operations}}, url = {http://www.sciencedirect.com/science/article/pii/S187661021630978X}, urldate = {2020-01-14}, volume = 97, year = 2016 }
  Link
  http://www.sciencedirect.com/science/article/pii/S187661021630978X
22. Scheer, D., Konrad, W., Class, H., Kissinger, A., Knopf, S., & Noack, V. (2016). Regional-scale brine migration along vertical pathways due to CO2 injection - Part 1: the participatory modeling approach. Hydrology and Earth System Sciences (HESS).
  - BibTeX
  BibTeX
  @article{Scheer2017, author = {Scheer, Dirk and Konrad, Wilfried and Class, Holger and Kissinger, Alexander and Knopf, Stefan and Noack, Vera}, journal = {Hydrology and Earth System Sciences (HESS)}, month = {12}, note = {, IWS2ID=4413 , Partnerinstitution: Bundesanstalt für Geowissenschaften und Rohstoffe (BGR), Dialogik }, title = {Regional-scale brine migration along vertical pathways due to CO2 injection - Part 1: the participatory modeling approach}, year = 2016 }
23. Hommel, J., Lauchnor, E., Gerlach, R., Cunningham, A. B., Ebigbo, A., Helmig, R., & Class, H. (2016). Investigating the influence of the initial biomass distribution and injection strategies on biofilm-mediated calcite precipitation in porous media. Transport in Porous Media, 114(2), Article 2. https://doi.org/10.1007/s11242-015-0617-3
  - BibTeX
  - Link
  BibTeX
  @article{NULL, author = {Hommel, Johannes and Lauchnor, Ellen and Gerlach, Robin and Cunningham, Alfred B. and Ebigbo, Anozie and Helmig, Rainer and Class, Holger}, doi = {10.1007/s11242-015-0617-3}, journal = {Transport in Porous Media}, month = {12}, note = {, IWS2ID=3133 , Partnerinstitution: Montana State University , Partneraddress: Bozeman, Montana, USA }, number = 2, page = {557-579}, title = {Investigating the influence of the initial biomass distribution and injection strategies on biofilm-mediated calcite precipitation in porous media}, url = {http://rdcu.be/jUty}, volume = 114, year = 2016 }
  Link
  http://rdcu.be/jUty
24. Kleinknecht, S., Class, H., & Braun, J. (2015). Density-Driven Migration of Heavy NAPL Vapor in the Unsaturated Zone. Vadose Zone Journal, 14.
  - BibTeX
  BibTeX
  @article{kleinknecht2015densitydriven, author = {Kleinknecht, Simon and Class, Holger and Braun, Jürgen}, journal = {Vadose Zone Journal}, month = {08}, note = {, IWSID=3146 }, title = {Density-Driven Migration of Heavy NAPL Vapor in the Unsaturated Zone}, volume = 14, year = 2015 }
25. Scheer, D., Konrad, W., Class, H., Kissinger, A., Knopf, S., & Noack, V. (2015). Expert involvement in science development: (re-)evaluation of an early screening tool for carbon storage site characterization. International Journal of Greenhouse Gas Control, 37.
  - BibTeX
  BibTeX
  @article{NULL, author = {Scheer, Dirk and Konrad, Wilfried and Class, Holger and Kissinger, Alexander and Knopf, Stefan and Noack, Vera}, journal = {International Journal of Greenhouse Gas Control}, month = {03}, note = {, IWS2ID=3054 , Partneraddress: St. Moritz, Schweiz }, page = {228-236}, title = {Expert involvement in science development: (re-)evaluation of an early screening tool for carbon storage site characterization}, volume = 37, year = 2015 }
26. Class, H., Mahl, L., Ahmed, W., Norden, B., Kühn, M., & Kempka, T. (2015). Matching Pressure Measurements and Observed CO2 Arrival Times with Static and Dynamic Modelling at the Ketzin Storage site. Energy Procedia, 76.
  - BibTeX
  BibTeX
  @article{NULL, author = {Class, Holger and Mahl, Lena and Ahmed, Waqas and Norden, Ben and Kühn, Michael and Kempka, Thomas}, journal = {Energy Procedia}, month = {08}, note = {, IWS2ID=3111 , Partnerinstitution: Geoforschungszentrum Potsdam , Partneraddress: Potsdam }, page = {623-632}, title = {Matching Pressure Measurements and Observed CO2 Arrival Times with Static and Dynamic Modelling at the Ketzin Storage site }, volume = 76, year = 2015 }
27. Hommel, J., Lauchnor, E., Phillips, A., Gerlach, R., Cunningham, A. B., Helmig, R., Ebigbo, A., & Class, H. (2015). A revised model for microbially induced calcite precipitation: Improvements and new insights based on recent experiments. Water Resources Research, 51(5), Article 5. https://doi.org/10.1002/2014WR016503
  - BibTeX
  BibTeX
  @article{Hommel2015a, author = {Hommel, Johannes and Lauchnor, Ellen and Phillips, Adrienne and Gerlach, Robin and Cunningham, Alfred B. and Helmig, Rainer and Ebigbo, Anozie and Class, Holger}, doi = {10.1002/2014WR016503}, journal = {Water Resources Research}, month = {05}, note = {, IWS2ID=3059 , Partnerinstitution: Montana State University , Partneraddress: Bozeman, Montana, USA }, number = 5, page = {3695-3715}, title = {A revised model for microbially induced calcite precipitation: Improvements and new insights based on recent experiments}, volume = 51, year = 2015 }
28. Schaedle, P., Hubschwerlen, N., & Class, H. (2014). Optimizing the modeling performance for safety assessments of nuclear waste repositories by approximating two-phase flow and transport by single-phase transport simulations. Nuclear Technology, 187.
  - BibTeX
  BibTeX
  @article{NULL, author = {Schaedle, Philipp and Hubschwerlen, Nicolas and Class, Holger}, journal = {Nuclear Technology}, month = {08}, note = {, IWS2ID=3078 , Partnerinstitution: AF Consult, Schweiz }, page = {188-197}, title = {Optimizing the modeling performance for safety assessments of nuclear waste repositories by approximating two-phase flow and transport by single-phase transport simulations}, volume = 187, year = 2014 }
29. Helmig, R., Flemisch, B., Wolff, M., Ebigbo, A., & Class, H. (2013). Model coupling for multiphase flow in porous media. Advances in Water Resources, 51. https://doi.org/10.1016/j.advwatres.2012.07.003
  - BibTeX
  - Link
  BibTeX
  @article{NULL, author = {Helmig, Rainer and Flemisch, Bernd and Wolff, Markus and Ebigbo, Anozie and Class, Holger}, doi = {10.1016/j.advwatres.2012.07.003}, journal = {Advances in Water Resources}, month = {07}, note = {, IWS2ID=2774 }, page = {52-66}, title = {Model coupling for multiphase flow in porous media}, url = {http://www.sciencedirect.com/science/article/pii/S0309170812001911}, volume = 51, year = 2013 }
  Link
  http://www.sciencedirect.com/science/article/pii/S0309170812001911
30. Kempka, T., Class, H., Görke, U.-J., Norden, B., Kolditz, O., Kühn, M., Walter, L., Wang, W., & Zehner, B. (2013). A dynamic flow simulation code intercomparison based on the revised static model of the Ketzin pilot site. Energy Procedia, 40.
  - BibTeX
  BibTeX
  @article{NULL, author = {Kempka, Thomas and Class, Holger and Görke, Uwe-Jens and Norden, Ben and Kolditz, Olaf and Kühn, Michael and Walter, Lena and Wang, Wenqing and Zehner, Björn}, journal = {Energy Procedia}, month = {09}, note = {, IWS2ID=2853 }, page = {418-427}, title = {A dynamic flow simulation code intercomparison based on the revised static model of the Ketzin pilot site}, volume = 40, year = 2013 }
31. Juanes, R., & Class, H. (2013). Special issue on computational methods in geologic CO2 sequestration. Advances in Water Resources, 62. https://doi.org/10.1016/j.advwatres.2013.10.012
  - BibTeX
  BibTeX
  @article{NULL, author = {Juanes, Ruben and Class, Holger}, doi = {10.1016/j.advwatres.2013.10.012}, journal = {Advances in Water Resources}, month = {12}, note = {, IWS2ID=3072 }, page = {353-355}, title = {Special issue on computational methods in geologic CO2 sequestration}, volume = 62, year = 2013 }
32. Kissinger, A., Helmig, R., Ebigbo, A., Class, H., Lange, T., Sauter, M., Heitfeld, M., Klünker, J., & Jahnke, W. (2013). Hydraulic fracturing in unconventional gas reservoirs: risks in the geological system, part 2. Environmental Earth Sciences. https://doi.org/10.1007/s12665-013-2578-6
  - BibTeX
  BibTeX
  @article{NULL, author = {Kissinger, Alexander and Helmig, Rainer and Ebigbo, Anozie and Class, Holger and Lange, Torsten and Sauter, Martin and Heitfeld, Michael and Klünker, Johannes and Jahnke, Wiebke}, doi = {10.1007/s12665-013-2578-6}, journal = {Environmental Earth Sciences}, month = {06}, note = {, IWS2ID=2846 }, title = {Hydraulic fracturing in unconventional gas reservoirs: risks in the geological system, part 2}, year = 2013 }
33. Walter, L., Binning, P. J., & Class, H. (2013). Predicting salt intrusion into freshwater aquifers resulting from CO2 injection - a study on the influence of conservative assumptions. Advances in Water Resources, 62.
  - BibTeX
  BibTeX
  @article{NULL, author = {Walter, Lena and Binning, Philip J. and Class, Holger}, journal = {Advances in Water Resources}, month = {08}, note = {, IWS2ID=2854 }, page = {543-554}, title = {Predicting salt intrusion into freshwater aquifers resulting from CO2 injection - a study on the influence of conservative assumptions}, volume = 62, year = 2013 }
34. Hommel, J., Cunningham, A. B., Helmig, R., Ebigbo, A., & Class, H. (2013). Numerical Investigation of Microbially Induced Calcite Precipitation as a Leakage Mitigation Technology. Energy Procedia, 40,2013. https://doi.org/10.1016/j.egypro.2013.08.045
  - BibTeX
  - Link
  BibTeX
  @article{Hommel2013a, author = {Hommel, Johannes and Cunningham, Alfred B. and Helmig, Rainer and Ebigbo, Anozie and Class, Holger}, doi = {10.1016/j.egypro.2013.08.045}, journal = {Energy Procedia}, month = {08}, note = {, date=09.04.2013, IWS2ID=2881 , Institution: European Geosciences Union }, page = {392-397}, title = {Numerical Investigation of Microbially Induced Calcite Precipitation as a Leakage Mitigation Technology}, url = {http://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2013/Hommel2013_EnergyProcedia.pdf}, volume = {40,2013}, year = 2013 }
  Link
  http://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2013/Hommel2013_EnergyProcedia.pdf
35. Bauer, S., Class, H., Ebert, M., Feeser, V., Götze, H., Holzheid, A., Kolditz, O., Rosenbaum, S., Rabbel, W., Schäfer, D., & Dahmke, A. (2012). Modeling, parameterization and evaluation of monitoring methods for CO2 storage in deep saline formations: the CO2-MoPa project. Environmental Earth Sciences, 67. https://doi.org/10.1007/s12665-012-1707-y
  - BibTeX
  BibTeX
  @article{NULL, author = {Bauer, Sebastian and Class, Holger and Ebert, Markus and Feeser, Volker and Götze, Hans and Holzheid, Astrid and Kolditz, Olaf and Rosenbaum, Sabine and Rabbel, Wolfgang and Schäfer, Dirk and Dahmke, Andreas}, doi = {10.1007/s12665-012-1707-y}, journal = {Environmental Earth Sciences}, month = {09}, note = {, IWS2ID=3076 , Partneraddress: Kiel }, page = {351-367}, title = {Modeling, parameterization and evaluation of monitoring methods for CO2 storage in deep saline formations: the CO2-MoPa project}, volume = 67, year = 2012 }
36. Walter, L., Oladyshkin, S., Class, H., Darcis, M., & Helmig, R. (2011). A study on pressure evolution in a sand channel system during CO2 injection. Energy Procedia, 4.
  - BibTeX
  BibTeX
  @article{NULL, author = {Walter, Lena and Oladyshkin, Sergey and Class, Holger and Darcis, Melanie and Helmig, Rainer}, journal = {Energy Procedia}, month = {06}, note = {, IWS2ID=2875 }, page = {3722-3729}, title = {A study on pressure evolution in a sand channel system during CO2 injection}, volume = 4, year = 2011 }
37. Schäfer, F., Walter, L., Class, H., & Müller, C. (2011). The regional pressure impact of CO2 storage: a showcase study from the North German Basin. Environmental Earth Sciences. https://doi.org/10.1007/s12665-011-1184-8
  - BibTeX
  BibTeX
  @article{NULL, author = {Schäfer, Frauke and Walter, Lena and Class, Holger and Müller, Christian}, doi = {10.1007/s12665-011-1184-8}, journal = {Environmental Earth Sciences}, month = {12}, note = {, IWS2ID=2649 , Institution: Bundesanstalt für Geowissenschaften und Rohstoffe (BGR) , Address: Hannover }, title = {The regional pressure impact of CO2 storage: a showcase study from the North German Basin}, year = 2011 }
38. Neuweiler, I., Papafotiou, A., Class, H., & Helmig, R. (2011). Estimation of effective parameters for a two-phase flow problem in non-Gaussian heterogeneous porous media. Journal of Contaminant Hydrology, 120–121(1), Article 1. https://doi.org/10.1016/j.jconhyd.2010.08.001
  - BibTeX
  BibTeX
  @article{NULL, author = {Neuweiler, Insa and Papafotiou, Alexandros and Class, Holger and Helmig, Rainer}, doi = {10.1016/j.jconhyd.2010.08.001}, journal = {Journal of Contaminant Hydrology}, month = {07}, note = {, IWS2ID=2544 , Partnerinstitution: Institut für Strömungsmechanik und Umweltphysik im Bauwesen, Universität Hannover , Partneraddress: Hannover }, number = 1, page = {141-156}, title = {Estimation of effective parameters for a two-phase flow problem in non-Gaussian heterogeneous porous media}, volume = {120-121}, year = 2011 }
39. Oladyshkin, S., Class, H., Helmig, R., & Nowak, W. (2011). A concept for data-driven uncertainty quantification and its application to carbon dioxide storage in geological formations. Advances in Water Resources, 34. https://doi.org/10.1016/j.advwatres.2011.08.005
  - BibTeX
  BibTeX
  @article{NULL, author = {Oladyshkin, Sergey and Class, Holger and Helmig, Rainer and Nowak, Wolfgang}, doi = {10.1016/j.advwatres.2011.08.005}, journal = {Advances in Water Resources}, month = {00}, note = {, IWS2ID=2559 }, page = {1508-1518}, title = {A concept for data-driven uncertainty quantification and its application to carbon dioxide storage in geological formations}, volume = 34, year = 2011 }
40. Darcis, M., Class, H., Flemisch, B., & Helmig, R. (2011). Sequential model coupling for feasibility studies of CO2 storage in deep saline aquifers. Oil & Gas Science and Technology-Revue de l’IFP, 66(1), Article 1. https://doi.org/10.2516/ogst/2010037
  - BibTeX
  - Link
  BibTeX
  @article{NULL, author = {Darcis, Melanie and Class, Holger and Flemisch, Bernd and Helmig, Rainer}, doi = {10.2516/ogst/2010037}, journal = {Oil & Gas Science and Technology-Revue de l'IFP}, month = {12}, note = {, IWS2ID=2558 }, number = 1, page = {93-103}, title = {Sequential model coupling for feasibility studies of CO2 storage in deep saline aquifers}, url = {http://ogst.ifpenergiesnouvelles.fr/index.php?option=com_article&access=doi&doi=10.2516/ogst/2010037&Itemid=129}, volume = 66, year = 2011 }
  Link
  http://ogst.ifpenergiesnouvelles.fr/index.php?option=com_article&access=doi&doi=10.2516/ogst/2010037&Itemid=129
41. Tatomir, A., Szymkiewicz, A., Class, H., & Helmig, R. (2011). Modeling two phase flow in large scale fractured porous media with an extended multiple interacting continua method. Computer Modeling in Engineering & Sciences.
  - BibTeX
  BibTeX
  @article{NULL, author = {Tatomir, Alexandru and Szymkiewicz, Adam and Class, Holger and Helmig, Rainer}, journal = {Computer Modeling in Engineering & Sciences}, month = {12}, note = {accepted, IWS2ID=2659 , Partnerinstitution: Gdansk University of Technology }, title = {Modeling two phase flow in large scale fractured porous media with an extended multiple interacting continua method}, year = 2011 }
42. Oladyshkin, S., Class, H., Helmig, R., & Nowak, W. (2011). An integrative approach to robust design and probabilistic risk assessment for CO2 storage in geological formations. Computational Geosciences, 15(3), Article 3. https://doi.org/10.1007/s10596-011-9224-8
  - BibTeX
  BibTeX
  @article{NULL, author = {Oladyshkin, Sergey and Class, Holger and Helmig, Rainer and Nowak, Wolfgang}, doi = {10.1007/s10596-011-9224-8}, journal = {Computational Geosciences}, month = {12}, note = {, IWS2ID=2503 }, number = 3, page = {565-577}, title = {An integrative approach to robust design and probabilistic risk assessment for CO2 storage in geological formations}, volume = 15, year = 2011 }
43. Kopp, A., Binning, P. J., Johannsen, K., Helmig, R., & Class, H. (2010). A contribution to risk analysis for leakage through abandoned wells in geological CO2 storage. Advances in Water Resources, 33(8), Article 8. https://doi.org/10.1016/j.advwatres.2010.05.001
  - BibTeX
  BibTeX
  @article{NULL, author = {Kopp, Andreas and Binning, Philip J. and Johannsen, Klaus and Helmig, Rainer and Class, Holger}, doi = {10.1016/j.advwatres.2010.05.001}, journal = {Advances in Water Resources}, month = {12}, note = {, IWS2ID=2437 }, number = 8, page = {867-879}, title = {A contribution to risk analysis for leakage through abandoned wells in geological CO2 storage}, volume = 33, year = 2010 }
44. Kempka, T., Kühn, M., Class, H., Frykman, P., Kopp, A., Nielsen, C. M., & Probst, P. (2010). Modelling of CO2 arrival time at Ketzin - Part I. International Journal of Greenhouse Gas Control, 4. https://doi.org/10.1016/j.ijggc.2010.07.005
  - BibTeX
  BibTeX
  @article{NULL, author = {Kempka, Thomas and Kühn, Michael and Class, Holger and Frykman, Peter and Kopp, Andreas and Nielsen, C.M. and Probst, Peter}, doi = {10.1016/j.ijggc.2010.07.005}, journal = {International Journal of Greenhouse Gas Control}, month = {12}, note = {, IWS2ID=3075 }, page = {1007-1015}, title = {Modelling of CO2 arrival time at Ketzin - Part I}, volume = 4, year = 2010 }
45. Ochs, S. O., Class, H., Färber, A., & Helmig, R. (2010). Methods for predicting the spreading of steam below the water table during subsurface remediation. Water Resources Research, 46. https://doi.org/10.1029/2007WR006401
  - BibTeX
  BibTeX
  @article{NULL, author = {Ochs, Steffen Oliver and Class, Holger and Färber, Arne and Helmig, Rainer}, doi = {10.1029/2007WR006401}, journal = {Water Resources Research}, month = {12}, note = {, IWS2ID=2501 }, page = {W05520}, title = {Methods for predicting the spreading of steam below the water table during subsurface remediation}, volume = 46, year = 2010 }
46. Class, H., Dahle, H. K., & Helmig, R. (2009). Preface (to the Special Issue). Computational Geosciences, 13. https://doi.org/10.1007/s10596-009-9160-z
  - BibTeX
  BibTeX
  @article{NULL, author = {Class, Holger and Dahle, Helge K. and Helmig, Rainer}, doi = {10.1007/s10596-009-9160-z}, journal = {Computational Geosciences}, month = {12}, note = {, IWS2ID=3077 }, page = {405-407}, title = {Preface (to the Special Issue)}, volume = 13, year = 2009 }
47. Darcis, M., Class, H., & Flemisch, B. (2009). Coupling Models of Different Complexity for the Simulation of CO2 Storage in Saline Aquifers. Energy Procedia, 1. https://www.sciencedirect.com/science/article/pii/S187661020900232X
  - BibTeX
  - Link
  BibTeX
  @article{NULL, author = {Darcis, Melanie and Class, Holger and Flemisch, Bernd}, journal = {Energy Procedia}, month = {01}, note = {, IWS2ID=2454 }, page = {1767-1774}, title = {Coupling Models of Different Complexity for the Simulation of CO2 Storage in Saline Aquifers}, url = {https://www.sciencedirect.com/science/article/pii/S187661020900232X}, volume = 1, year = 2009 }
  Link
  https://www.sciencedirect.com/science/article/pii/S187661020900232X
48. Kopp, A., Class, H., & Helmig, R. (2009). Investigations on CO2 storage capacity in saline aquifers - Part 2: Estimation of storage capacity coefficients. International Journal of Greenhouse Gas Control, 3(3), Article 3. https://doi.org/10.1016/j.ijggc.2008.10.001
  - BibTeX
  - Link
  BibTeX
  @article{NULL, author = {Kopp, Andreas and Class, Holger and Helmig, Rainer}, doi = {10.1016/j.ijggc.2008.10.001}, journal = {International Journal of Greenhouse Gas Control}, month = {12}, note = {, IWS2ID=2385 }, number = 3, page = {277-287}, title = {Investigations on CO2 storage capacity in saline aquifers - Part 2: Estimation of storage capacity coefficients}, url = {http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B83WP-4V1D7WW-1-F&_cdi=33792&_user=479010&_orig=search&_coverDate=05%2F31%2F2009&_sk=999969996&view=c&wchp=dGLzVlz-zSkWz&md5=0fcbb46a64e634f1c9644b3a3078a21f&ie=/sdarticle.pdf}, volume = 3, year = 2009 }
  Link
  http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B83WP-4V1D7WW-1-F&_cdi=33792&_user=479010&_orig=search&_coverDate=05%2F31%2F2009&_sk=999969996&view=c&wchp=dGLzVlz-zSkWz&md5=0fcbb46a64e634f1c9644b3a3078a21f&ie=/sdarticle.pdf
49. Kopp, A., Class, H., & Helmig, R. (2009). Investigations on CO2 storage capacity in saline aquifers - Part 1: Dimensional analysis of flow processes and reservoir characteristics. International Journal of Greenhouse Gas Control, 3(3), Article 3. https://doi.org/10.1016/j.ijggc.2008.10.002
  - BibTeX
  - Link
  BibTeX
  @article{NULL, author = {Kopp, Andreas and Class, Holger and Helmig, Rainer}, doi = {10.1016/j.ijggc.2008.10.002}, journal = {International Journal of Greenhouse Gas Control}, month = {12}, note = {, IWS2ID=2384 }, number = 3, page = {263-276}, title = {Investigations on CO2 storage capacity in saline aquifers - Part 1: Dimensional analysis of flow processes and reservoir characteristics}, url = {http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B83WP-4V1MFNV-1-R&_cdi=33792&_user=479010&_orig=search&_coverDate=05%2F31%2F2009&_sk=999969996&view=c&wchp=dGLzVlz-zSkWz&md5=0b150c61434f46d53f6ce05466fa9d31&ie=/sdarticle.pdf}, volume = 3, year = 2009 }
  Link
  http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B83WP-4V1MFNV-1-R&_cdi=33792&_user=479010&_orig=search&_coverDate=05%2F31%2F2009&_sk=999969996&view=c&wchp=dGLzVlz-zSkWz&md5=0b150c61434f46d53f6ce05466fa9d31&ie=/sdarticle.pdf
50. Kopp, A., Probst, P., Class, H., Hurter, S., & Helmig, R. (2009). Estimation of CO2 storage capacity coefficients in geologic formations. Energy Procedia, 1(1), Article 1. https://doi.org/10.1016/j.egypro.2009.02.060
  - BibTeX
  BibTeX
  @article{NULL, author = {Kopp, Andreas and Probst, Peter and Class, Holger and Hurter, Suzanne and Helmig, Rainer}, doi = {10.1016/j.egypro.2009.02.060}, journal = {Energy Procedia}, month = {12}, note = {, IWS2ID=2451 }, number = 1, page = {2863-2870}, title = {Estimation of CO2 storage capacity coefficients in geologic formations}, volume = 1, year = 2009 }
51. Class, H., Ebigbo, A., Helmig, R., Dahle, H. K., Nordbotten, J. M., Celia, M. A., Audigane, P., Darcis, M., Ennis-King, J., Fan, Y., Flemisch, B., Gasda, S. E., Jin, M., Krug, S., Labregere, D., Naderi Beni, A., Pawar, R. J., Sbai, A., Thomas, S. G., … Wei, L. (2009). A benchmark study on problems related to CO2 storage in geologic formations: Summary and discussion of the results. Computational Geosciences, 13(4), Article 4. https://doi.org/10.1007/s10596-009-9146-x
  - BibTeX
  - Link
  BibTeX
  @article{NULL, author = {Class, Holger and Ebigbo, Anozie and Helmig, Rainer and Dahle, Helge K. and Nordbotten, Jan M. and Celia, Michael A. and Audigane, Pascal and Darcis, Melanie and Ennis-King, Jonathan and Fan, Yaqing and Flemisch, Bernd and Gasda, Sarah E. and Jin, Min and Krug, Stefanie and Labregere, Diane and Naderi Beni, Ali and Pawar, Rajesh J. and Sbai, Adil and Thomas, Sunil G. and Trenty, Laurent and Wei, Lingli}, doi = {10.1007/s10596-009-9146-x}, journal = {Computational Geosciences}, month = {12}, note = {, IWS2ID=2473 }, number = 4, page = {409-434}, title = {A benchmark study on problems related to CO2 storage in geologic formations: Summary and discussion of the results}, url = {https://link.springer.com/article/10.1007%2Fs10596-009-9146-x?LI=true}, volume = 13, year = 2009 }
  Link
  https://link.springer.com/article/10.1007%2Fs10596-009-9146-x?LI=true
52. Kopp, A., Ebigbo, A., Bielinski, A., Class, H., & Helmig, R. (2009). Numerical simulation of temperature changes caused by CO2 injection in geological reservoirs. Carbon Dioxide Sequestration in Geological Media - State of the Science, 59, Article 59.
  - BibTeX
  BibTeX
  @article{NULL, author = {Kopp, Andreas and Ebigbo, Anozie and Bielinski, Andreas and Class, Holger and Helmig, Rainer}, booktitle = {Carbon dioxide sequestration in geological media - State of the science}, editor = {Grobe, M. and Pashin, J. C. and Dodge, R. L.}, month = {12}, note = {, IWS2ID=2101 , Address: Edmonton, USA }, number = 59, page = {439-456}, title = {Numerical simulation of temperature changes caused by CO2 injection in geological reservoirs}, year = 2009 }
53. Bielinski, A., Kopp, A., Schütt, H., & Class, H. (2008). Monitoring of CO2 plumes during storage in geological formations using temperature signals: numerical investigation (No. 2). 2, Article 2. https://doi.org/10.1016/j.ijggc.2008.02.008
  - BibTeX
  BibTeX
  @article{NULL, author = {Bielinski, Andreas and Kopp, Andreas and Schütt, Hartmut and Class, Holger}, doi = {10.1016/j.ijggc.2008.02.008}, editor = {Gale, J.}, month = {04}, note = {, IWS2ID=2233 , Address: IEA Greenhouse Gas R&D Programme, Gloucestershire, UK }, number = 2, page = {319-328}, publisher = {International Journal of Greenhouse Gas Control}, title = {Monitoring of CO2 plumes during storage in geological formations using temperature signals: numerical investigation}, year = 2008 }
54. Class, H., Helmig, R., & Neuweiler, I. (2008). Sequential coupling of models for contaminant spreading in the vadose zone. Vadose Zone Journal, 7(2), Article 2. https://doi.org/10.2136/vzj2007.0056
  - BibTeX
  BibTeX
  @article{NULL, author = {Class, Holger and Helmig, Rainer and Neuweiler, Insa}, doi = {10.2136/vzj2007.0056}, journal = {Vadose Zone Journal}, month = {12}, note = {, IWS2ID=2195 }, number = 2, page = {721-731}, title = {Sequential coupling of models for contaminant spreading in the vadose zone}, volume = 7, year = 2008 }
55. Acosta, M., Merten, C., Eigenberger, G., Class, H., Helmig, R., Thoben, B., & Müller-Steinhagen, H. (2006). Modeling non-isothermal two-phase multicomponent flow in the cathode of PEM fuel cells (No. 2). 2, Article 2. https://doi.org/10.1016/j.jpowsour.2005.12.068
  - BibTeX
  BibTeX
  @article{acostaetal:2005, author = {Acosta, Maria and Merten, Clemens and Eigenberger, Gerhart and Class, Holger and Helmig, Rainer and Thoben, Birgit and Müller-Steinhagen, Hans}, doi = {10.1016/j.jpowsour.2005.12.068}, month = {09}, note = {, IWS2ID=1369 }, number = 2, page = {1123-1141}, publisher = {Journal of Power Sources}, title = {Modeling non-isothermal two-phase multicomponent flow in the cathode of PEM fuel cells}, year = 2006 }
56. Hazra, S. B., Class, H., Helmig, R., & Schulz, V. (2004). Forward and inverse problems in modeling of multiphase flow and transport through porous media (No. 1). 8(1), Article 1. https://doi.org/10.1023/B:COMG.0000024445.39048.21
  - BibTeX
  BibTeX
  @article{subhendu:2004, author = {Hazra, Subhendu Bikash and Class, Holger and Helmig, Rainer and Schulz, Volker}, doi = {10.1023/B:COMG.0000024445.39048.21}, month = {12}, note = {, IWS2ID=796 }, number = 1, page = {21-47}, publisher = {Computational Geosciences}, title = {Forward and inverse problems in modeling of multiphase flow and transport through porous media}, volume = 8, year = 2004 }
57. Class, H., & Helmig, R. (2002). Numerical simulation of nonisothermal multiphase multicomponent processes in porous media - 2. Applications for the injection of steam and air (No. 5). 25(5), Article 5. https://doi.org/10.1016/S0309-1708(02)00015-5
  - BibTeX
  BibTeX
  @article{Class:2002b, author = {Class, Holger and Helmig, Rainer}, doi = {10.1016/S0309-1708(02)00015-5}, month = {12}, note = {, IWS2ID=132 }, number = 5, page = {551-564}, publisher = {Advances in Water Resources}, title = {Numerical simulation of nonisothermal multiphase multicomponent processes in porous media - 2. Applications for the injection of steam and air}, volume = 25, year = 2002 }
58. Class, H., Helmig, R., & Bastian, P. (2002). Numerical simulation of nonisothermal multiphase multicomponent processes in porous media - 1. An efficient solution technique (No. 5). 25(5), Article 5. https://doi.org/10.1016/S0309-1708(02)00014-3
  - BibTeX
  BibTeX
  @article{Class:2002a, author = {Class, Holger and Helmig, Rainer and Bastian, Peter}, doi = {10.1016/S0309-1708(02)00014-3}, month = {12}, note = {, IWS2ID=131 }, number = 5, page = {533-550}, publisher = {Advances in Water Resources}, title = {Numerical simulation of nonisothermal multiphase multicomponent processes in porous media - 1. An efficient solution technique}, volume = 25, year = 2002 }
59. Helmig, R., Bastian, P., Class, H., Ewing, J., Hinkelmann, R., Huber, R. U., Jakobs, H., & Sheta, H. (1998). Architecture of the Modular Program System MUFTE-UG for Simulating Multiphase Flow and Transport Processes in Heterogeneous Porous Media. 2. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/hinkelmann/Geoscien.zip
  - BibTeX
  - Link
  BibTeX
  @article{Helmig:1998b, author = {Helmig, Rainer and Bastian, Peter and Class, Holger and Ewing, John and Hinkelmann, Reinhard and Huber, Ralf Uwe and Jakobs, Hartmut and Sheta, Hussam}, month = {12}, note = {, IWS2ID=82 , Address: Berlin }, page = {123-131}, publisher = {Mathematical Geology}, title = {Architecture of the Modular Program System MUFTE-UG for Simulating Multiphase Flow and Transport Processes in Heterogeneous Porous Media}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/hinkelmann/Geoscien.zip}, volume = 2, year = 1998 }
  Link
  https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/hinkelmann/Geoscien.zip
60. Helmig, R., Class, H., Färber, A., & Emmert, M. (1998). Heat transport in the unsaturated zone - comparison of experimental results and numerical simulations (No. 6). 36(6), Article 6.
  - BibTeX
  BibTeX
  @article{Helmig:1998c, author = {Helmig, Rainer and Class, Holger and Färber, Arne and Emmert, Martin}, month = {12}, note = {, IWS2ID=83 }, number = 6, page = {933-962}, publisher = {Journal of Hydraulic Research}, title = {Heat transport in the unsaturated zone - comparison of experimental results and numerical simulations}, volume = 36, year = 1998 }
61. Class, H., Mahl, L., Ahmed, W., Norden, B., Kühn, M., & Kempka, T. (1963). Matching pressure measurements and observed CO2 arrival times with static and dynamic modelling at the Ketzinstorage site.
  - BibTeX
  BibTeX
  @article{NULL, author = {Class, Holger and Mahl, Lena and Ahmed, Waqas and Norden, Ben and Kühn, Michael and Kempka, Thomas}, month = {55}, note = {, IWS2ID=3098 , Partneraddress: Potsdam }, title = {Matching pressure measurements and observed CO2 arrival times with static and dynamic modelling at the Ketzinstorage site}, year = 1963 }
Monograhs
1. Scheer, D., Class, H., & Flemisch, B. (2021). Subsurface Environmental Modelling Between Science and Policy. Springer International Publishing. https://doi.org/10.1007/978-3-030-51178-4
  - BibTeX
  - Link
  BibTeX
  @book{lh2-2020-Scheer2021, author = {Scheer, Dirk and Class, Holger and Flemisch, Bernd}, doi = {10.1007/978-3-030-51178-4}, isbn = {978-3-030-51177-7}, issn = {1866-8348}, publisher = {Springer International Publishing}, title = {Subsurface Environmental Modelling Between Science and Policy}, url = {https://doi.org/10.1007/978-3-030-51178-4}, year = 2021 }
  Link
  https://doi.org/10.1007/978-3-030-51178-4
2. Helmig, R., & Class, H. (2005). Grundlagen der Hydromechanik. Shaker Verlag.
  - BibTeX
  BibTeX
  @book{NULL, author = {Helmig, Rainer and Class, Holger}, isbn = {978-3-8322-4221-3}, month = {12}, note = {, IWS2ID=1725 , Address: Aachen }, publisher = {Shaker Verlag}, title = {Grundlagen der Hydromechanik}, year = 2005 }
Datasets
1. Weinhardt, F., Deng, J., Steeb, H., & Class, H. (2022). Optical Microscopy and log data of Enzymatically Induced Calcite Precipitation (EICP) in microfluidic cells (Quasi-2D-structure). DaRUS. https://doi.org/10.18419/darus-1799
  - BibTeX
  - Link
  BibTeX
  @dataset{darus-Weinhardtetal2022, author = {Weinhardt, Felix and Deng, Jingxuan and Steeb, Holger and Class, Holger}, doi = {10.18419/darus-1799}, publisher = {DaRUS}, title = {Optical Microscopy and log data of Enzymatically Induced Calcite Precipitation (EICP) in microfluidic cells (Quasi-2D-structure)}, url = {https://doi.org/10.18419/darus-1799}, version = {V1}, year = 2022 }
  Link
  https://doi.org/10.18419/darus-1799
2. Weinhardt, F., Class, H., Vahid Dastjerdi, S., Karadimitriou, N., Lee, D., & Steeb, H. (2021). Optical Microscopy and pressure measurements of Enzymatically Induced Calcite Precipitation (EICP) in a microfluidic cell. DaRUS. https://doi.org/10.18419/darus-818
  - BibTeX
  - Link
  BibTeX
  @dataset{darus-Weinhardtetal2021, author = {Weinhardt, Felix and Class, Holger and Vahid Dastjerdi, Samaneh and Karadimitriou, Nikolaos and Lee, Dongwon and Steeb, Holger}, doi = {10.18419/darus-818}, publisher = {DaRUS}, title = {Optical Microscopy and pressure measurements of Enzymatically Induced Calcite Precipitation (EICP) in a microfluidic cell}, url = {https://doi.org/10.18419/darus-818}, version = {V1}, year = 2021 }
  Link
  https://doi.org/10.18419/darus-818
3. Vahid Dastjerdi, S., Steeb, H., Ruf, M., Lee, D., Weinhardt, F., Karadimitriou, N., & Class, H. (2021). micro-XRCT dataset of Enzymatically Induced Calcite Precipitation (EICP) in a microfluidic cell. DaRUS. https://doi.org/10.18419/darus-866
  - BibTeX
  - Link
  BibTeX
  @dataset{darus-Dastjerditetal2021, author = {Vahid Dastjerdi, Samaneh and Steeb, Holger and Ruf, Matthias and Lee, Dongwon and Weinhardt, Felix and Karadimitriou, Nikolaos and Class, Holger}, doi = {10.18419/darus-866}, publisher = {DaRUS}, title = {micro-XRCT dataset of Enzymatically Induced Calcite Precipitation (EICP) in a microfluidic cell}, url = {https://doi.org/10.18419/darus-866}, version = {V1}, year = 2021 }
  Link
  https://doi.org/10.18419/darus-866
Contributions to anthologies
1. Class, H., Kissinger, A., Knopf, S., Konrad, W., Noack, V., & Scheer, D. (2015). Combined Natural and Social Science Approach for Regional-Scale Characterisation of CO2 Storage Formations and Brine Migration Risks (CO2BRIM) (No. 22; Issue 22). Springer-Verlag.
  - BibTeX
  BibTeX
  @incollection{NULL, author = {Class, Holger and Kissinger, Alexander and Knopf, Stefan and Konrad, Wilfried and Noack, Vera and Scheer, Dirk}, month = {04}, note = {, IWS2ID=3031 }, number = 22, page = {209-227}, publisher = {Springer-Verlag}, title = {Combined Natural and Social Science Approach for Regional-Scale Characterisation of CO2 Storage Formations and Brine Migration Risks (CO2BRIM)}, year = 2015 }
2. Helmig, R., Hinkelmann, R., Class, H., Breiting, T., Kobayashi, K., Bielinski, A., & Sheta, H. (2003). Modellierung des Ausbreitungsverhaltens umwelt- und klimagefährdender Gase im Untergrund. In Simulation und Visualisierung an der Universität Stuttgart, Universität Stuttgart. Referat für Presse- und Öffentlichkeitsarbeit. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/simulation_uni.pdf
  - BibTeX
  - Link
  BibTeX
  @incollection{Helmig:2003, author = {Helmig, Rainer and Hinkelmann, Reinhard and Class, Holger and Breiting, Thomas and Kobayashi, Kenichiro and Bielinski, Andreas and Sheta, Hussam}, booktitle = {Simulation und Visualisierung an der Universität Stuttgart, Universität Stuttgart}, month = {12}, note = {, IWS2ID=587 , Address: Universität Stuttgart }, page = {22-28}, publisher = {Referat für Presse- und Öffentlichkeitsarbeit}, title = {Modellierung des Ausbreitungsverhaltens umwelt- und klimagefährdender Gase im Untergrund}, type = {Broschüre}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/simulation_uni.pdf}, year = 2003 }
  Link
  https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/simulation_uni.pdf
3. Hinkelmann, R., Sheta, H., Class, H., Sauter, E. J., Helmig, R., & Schlüter, M. (2002). Numerical Simulation of freshwater, salt water and methane interaction processes in a coastal aquifer. In J. Chadam, A. Cunningham, R. E. Ewing, & P. & M. W. Ortoleva (Eds.), IMA Volumes in Mathematics and its Applications, Volume 131: Resource Recovery, Confinement and Remediation of Environmental Hazards. Springer-Verlag.
  - BibTeX
  BibTeX
  @incollection{Hinkelmann:2002a, author = {Hinkelmann, Reinhard and Sheta, Hussam and Class, Holger and Sauter, Eberhard J. and Helmig, Rainer and Schlüter, Michael}, booktitle = {IMA Volumes in Mathematics and its Applications, Volume 131: Resource Recovery, Confinement and Remediation of Environmental Hazards}, editor = {Chadam, J. and Cunningham, A. and Ewing, R.E. and Ortoleva, P. & M. Wheeler}, month = {12}, note = {, IWS2ID=149 , Address: Tokyo, Berlin, New York }, page = {263-282}, publisher = {Springer-Verlag}, title = {Numerical Simulation of freshwater, salt water and methane interaction processes in a coastal aquifer}, year = 2002 }
4. Helmig, R., Class, H., & Hinkelmann, R. (2001). Isothermal and Nonisothermal Multiphase Multicomponent Processes in the Subsurface. In S. Diebels (Ed.), Zur Beschreibung komplexen Materialverhaltens: Beiträge zur Festschrift anläßlich des 50. Geburtstag von Herrn Prof. Dr.-Ing. W. Ehlers (II–7; Issues II–7). https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/hinkelmann/main.ps.gz
  - BibTeX
  - Link
  BibTeX
  @incollection{Helmig:2001b, author = {Helmig, Rainer and Class, Holger and Hinkelmann, Reinhard}, booktitle = {Zur Beschreibung komplexen Materialverhaltens: Beiträge zur Festschrift anläßlich des 50. Geburtstag von Herrn Prof. Dr.-Ing. W. Ehlers}, editor = {Diebels, S.}, month = {12}, note = {, IWS2ID=137 , Institution: Institut für Mechanik , Address: Universität Stuttgart }, number = {II-7}, page = {107-119}, title = {Isothermal and Nonisothermal Multiphase Multicomponent Processes in the Subsurface}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/hinkelmann/main.ps.gz}, year = 2001 }
  Link
  https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/hinkelmann/main.ps.gz
Conference papers
1. Hommel, J., Phillips, A., Gerlach, R., Cunningham, A. B., Helmig, R., & Class, H. (2017, November). Modeling porous medium modification through induced calcite precipitation. 7th GACM Colloquium on Computational Mechanics , 11.10.2017 - 13.10.2017, Stuttgart. https://dx.doi.org/10.18419/opus-9334
  - BibTeX
  - Link
  BibTeX
  @inproceedings{NULL, author = {Hommel, Johannes and Phillips, Adrienne and Gerlach, Robin and Cunningham, Alfred B. and Helmig, Rainer and Class, Holger}, booktitle = {7th GACM Colloquium on Computational Mechanics , 11.10.2017 - 13.10.2017, Stuttgart}, month = {11}, note = {, date=12.10.2017, IWS2ID=4486 }, page = {249-253}, title = {Modeling porous medium modification through induced calcite precipitation}, type = {Proceedings}, url = {https://dx.doi.org/10.18419/opus-9334}, year = 2017 }
  Link
  https://dx.doi.org/10.18419/opus-9334
2. Oladyshkin, S., Class, H., Helmig, R., & Nowak, W. (2010, December). Data-driven robust design and probabilistic risk assessment: application to underground carbon dioxide storage, Abstract H41L-03. AGU Fall Meeting 2010, 13.12.2010 - 17.12.2010, San Francisco, USA.
  - BibTeX
  BibTeX
  @inproceedings{NULL, author = {Oladyshkin, Sergey and Class, Holger and Helmig, Rainer and Nowak, Wolfgang}, booktitle = {AGU Fall Meeting 2010, 13.12.2010 - 17.12.2010, San Francisco, USA}, month = {12}, note = {, date=17.12.2010, IWS2ID=2569 }, title = {Data-driven robust design and probabilistic risk assessment: application to underground carbon dioxide storage, Abstract H41L-03}, year = 2010 }
3. Oladyshkin, S., Class, H., Helmig, R., & Nowak, W. (2010). Probabilistic risk assessment for CO2 storage in geological formations: robust design and support for decision making under uncertainty. Geophysical Research Abstracts, Vol.12(EGU2010-3559), Article EGU2010-3559.
  - BibTeX
  BibTeX
  @inproceedings{NULL, author = {Oladyshkin, Sergey and Class, Holger and Helmig, Rainer and Nowak, Wolfgang}, booktitle = {European Geosciences Union (EGU) - General Assembly, 02.05.2010 - 07.05.2010, Vienna, Austria}, journal = {Geophysical Research Abstracts}, month = {05}, note = {, IWS2ID=2525 }, number = {EGU2010-3559}, publisher = {E. Schweizerbart'sche Verlagsbuchhandlung}, title = {Probabilistic risk assessment for CO2 storage in geological formations: robust design and support for decision making under uncertainty}, volume = {Vol.12}, year = 2010 }
4. Oladyshkin, S., Class, H., Hofmann, R., & Nowak, W. (2010). Highly efficient tool for probabilistic risk assessment of CCS joint with injection design. In J. Carrera (Ed.), Computational Methods in Water Resources (CMWR), XVIII International Conference on Water Resources, 21.06.2010 - 24.06.2010, Barcelona, Spain. C.F. Müller Verlag.
  - BibTeX
  BibTeX
  @inproceedings{NULL, author = {Oladyshkin, Sergey and Class, Holger and Hofmann, Reiner and Nowak, Wolfgang}, booktitle = {Computational Methods in Water Resources (CMWR), XVIII International Conference on Water Resources, 21.06.2010 - 24.06.2010, Barcelona, Spain}, editor = {Carrera, J.}, month = {06}, note = {, IWS2ID=2535 }, publisher = {C.F. Müller Verlag}, title = {Highly efficient tool for probabilistic risk assessment of CCS joint with injection design}, year = 2010 }
5. Helmig, R., Class, H., Darcis, M., Niessner, J., Erbertseder, K., Perfahl, H., & Reuss, M. (2008, November). Transfer of modeling concepts for flow and transport processes in porous media systems to biological tissues. DFG Expertengespräch Medizintechnik, 06.11.2008 - 07.11.2008, Potsdam.
  - BibTeX
  BibTeX
  @inproceedings{NULL, author = {Helmig, Rainer and Class, Holger and Darcis, Melanie and Niessner, Jennifer and Erbertseder, Karin and Perfahl, Holger and Reuss, Matthias}, booktitle = {DFG Expertengespräch Medizintechnik, 06.11.2008 - 07.11.2008, Potsdam}, month = {11}, note = {, date=07.11.2008, IWS2ID=2409 }, title = {Transfer of modeling concepts for flow and transport processes in porous media systems to biological tissues}, year = 2008 }
6. Helmig, R., Darcis, M., & Class, H. (2008). Transfer of modeling concepts for flow and transport processes in porous media from subsurface systems to biological tissues. ASME International Mechanical Engineering Congress and Exposition, 31.10.2008 - 06.11.2008, Boston, 12(WOS:000265081000004), Article WOS:000265081000004.
  - BibTeX
  BibTeX
  @inproceedings{NULL, author = {Helmig, Rainer and Darcis, Melanie and Class, Holger}, booktitle = {ASME International Mechanical Engineering Congress and Exposition, 31.10.2008 - 06.11.2008, Boston}, month = {11}, note = {, IWS2ID=3096 , Address: New York }, number = {WOS:000265081000004}, page = {29-32}, publisher = {Thema Umwelt - Praktischer Umweltschutz Schweiz}, title = {Transfer of modeling concepts for flow and transport processes in porous media from subsurface systems to biological tissues}, type = {Proceedings}, volume = 12, year = 2008 }
7. Class, H., Ebigbo, A., & Kopp, A. (2007). Numerical modeling of CO2 storage in geological formations - recent developments and challenges. 1. French-German Symposium on Geological Storage of CO2, 21.06.2007 - 22.06.2007, Potsdam, ScienceReportNo.9, Article ScienceReportNo.9. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/class-d-f-07.pdf
  - BibTeX
  - Link
  BibTeX
  @inproceedings{NULL, author = {Class, Holger and Ebigbo, Anozie and Kopp, Andreas}, booktitle = {1. French-German Symposium on Geological Storage of CO2, 21.06.2007 - 22.06.2007, Potsdam}, month = {06}, note = {, IWS2ID=2146 , Institution: Geoforschungszentrum Potsdam }, number = {ScienceReportNo.9}, page = {51-58}, title = {Numerical modeling of CO2 storage in geological formations - recent developments and challenges}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/class-d-f-07.pdf}, year = 2007 }
  Link
  https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/class-d-f-07.pdf
8. Ochs, S. O., Class, H., & Helmig, R. (2006). Fortschritte bei der Entwicklung eines prognosefähigen numerischen Modells zur Simulation der Dampfinjektion in die gesättigte Bodenzone. In J. Braun & H.-P. & M. S. Koschitzky (Eds.), VEGAS - Statuskolloquium 2006, 28.09.2006 - 28.09.2006, Stuttgart (09_2006; Issue 09_2006).
  - BibTeX
  BibTeX
  @inproceedings{NULL, author = {Ochs, Steffen Oliver and Class, Holger and Helmig, Rainer}, booktitle = {VEGAS - Statuskolloquium 2006, 28.09.2006 - 28.09.2006, Stuttgart}, editor = {Braun, J. and Koschitzky, H.-P. & M. Stuhrmann}, month = {09}, note = {, date=28.09.2006, IWS2ID=2071 , Institution: Institut für Wasserbau , Address: Universität Stuttgart }, number = {09_2006}, page = {71-81}, title = {Fortschritte bei der Entwicklung eines prognosefähigen numerischen Modells zur Simulation der Dampfinjektion in die gesättigte Bodenzone}, type = {Tagungsband}, year = 2006 }
9. Helmig, R., Miller, C. T., Jakobs, H., Class, H., Hilpert, M., Kees, C. E., & Niessner, J. (2006, June). Multiphase Flow and Transport Modeling in Heterogeneous Porous Media. Progress in Industrial Mathematics at ECMI 2004, 21.06.2004 - 25.06.2004, Eindhoven University of Technology.
  - BibTeX
  BibTeX
  @inproceedings{helmig2006multiphase, author = {Helmig, Rainer and Miller, Cass T. and Jakobs, Hartmut and Class, Holger and Hilpert, Markus and Kees, Christopher E. and Niessner, Jennifer}, booktitle = {Progress in Industrial Mathematics at ECMI 2004, 21.06.2004 - 25.06.2004, Eindhoven University of Technology}, month = {06}, note = {, date=24.06.2004, IWS2ID=1310 , Address: Eindhoven University of Technology }, publisher = {Springer-Verlag}, title = {Multiphase Flow and Transport Modeling in Heterogeneous Porous Media}, type = {Vortrag}, year = 2006 }
10. Greiner, P., Braun, J., Class, H., Koschitzky, H.-P., Schnieders, J., & Stadler, L. (2005). Numerische Modellierung der Mehrphasen-/Mehrkomponenten-Hydraulik bei der Alkoholspülung. In J. Braun & H. P. & M. M. Koschitzky (Eds.), Ressource Untergrund, 10 Jahre VEGAS: Forschung und Technologieentwicklung zum Schutz von Grundwasser und Boden, 28.09.2005 - 29.09.2005, Universität Stuttgart (No. 145; Issue 145).
  - BibTeX
  BibTeX
  @inproceedings{greiner2005numerische, author = {Greiner, Philipp and Braun, Jürgen and Class, Holger and Koschitzky, Hans-Peter and Schnieders, Johannes and Stadler, Leopold}, booktitle = {Ressource Untergrund, 10 Jahre VEGAS: Forschung und Technologieentwicklung zum Schutz von Grundwasser und Boden, 28.09.2005 - 29.09.2005, Universität Stuttgart}, editor = {Braun, J and Koschitzky, H.P. & M. Müller}, isbn = {3-933761-48-4}, month = {09}, note = {, date=29.09.2005, IWS2ID=1753 , Institution: Institut für Wasserbau , Address: Universität Stuttgart }, number = 145, page = {62-68}, title = {Numerische Modellierung der Mehrphasen-/Mehrkomponenten-Hydraulik bei der Alkoholspülung}, year = 2005 }
11. Ochs, S. O., Class, H., & Färber, A. (2005). Numerische und experimentelle Untersuchung zur Dampfinjektion in die gesättigte Bodenzone. In J. Braun & H. P. & M. M. Koschitzky (Eds.), Ressource Untergrund, 10 Jahre VEGAS: Forschung und Technologieentwicklung zum Schutz von Grundwasser und Boden, 28.09.2005 - 29.09.2005, Universität Stuttgart (No. 145; Issue 145).
  - BibTeX
  BibTeX
  @inproceedings{ochs2005numerische, author = {Ochs, Steffen Oliver and Class, Holger and Färber, Arne}, booktitle = {Ressource Untergrund, 10 Jahre VEGAS: Forschung und Technologieentwicklung zum Schutz von Grundwasser und Boden, 28.09.2005 - 29.09.2005, Universität Stuttgart}, editor = {Braun, J and Koschitzky, H.P. & M. Müller}, isbn = {3-933761-48-4}, month = {09}, note = {, date=29.09.2005, IWS2ID=1755 , Institution: Institut für Wasserbau , Address: Universität Stuttgart }, number = 145, page = {98-108}, title = {Numerische und experimentelle Untersuchung zur Dampfinjektion in die gesättigte Bodenzone}, year = 2005 }
12. Class, H., & Ochs, S. O. (2005). Ein Konzept zur Kopplung numerischer Module für die Simulation von Schadstoffversickerung, -susbreitung und thermischer Sanierung. In J. Braun & H. P. & M. M. Koschitzky (Eds.), Ressource Untergrund, 10 Jahre VEGAS: Forschung und Technologieentwicklung zum Schutz von Grundwasser und Boden, 28.09.2005 - 29.09.2005, Universität Stuttgart (No. 145; Issue 145).
  - BibTeX
  BibTeX
  @inproceedings{class2005konzept, author = {Class, Holger and Ochs, Steffen Oliver}, booktitle = {Ressource Untergrund, 10 Jahre VEGAS: Forschung und Technologieentwicklung zum Schutz von Grundwasser und Boden, 28.09.2005 - 29.09.2005, Universität Stuttgart}, editor = {Braun, J and Koschitzky, H.P. & M. Müller}, isbn = {3-933761-48-4}, month = {09}, note = {, date=29.09.2005, IWS2ID=1754 , Institution: Institut für Wasserbau , Address: Universität Stuttgart }, number = 145, page = {69-78}, title = {Ein Konzept zur Kopplung numerischer Module für die Simulation von Schadstoffversickerung, -susbreitung und thermischer Sanierung}, year = 2005 }
13. Färber, A., Class, H., Jie, D., Koschitzky, H.-P., Müller, C., Ochs, S. O., Trötschler, O., & Steidinger, S. (2004). Dampf-Luft-Injektion zur In-situ-Sanierung der gesättigten Bodenzone: Anwendungsmöglichkeiten und Erfahrungen aus einer PCE-Sanierung in Albstadt. In B. Barczewski, H.-P. Koschitzky, & K. & R. W. Weber (Eds.), VEGAS - Statuskolloquium 2004, 05.10.2004, Universität Stuttgart (No. 131; Issue 131).
  - BibTeX
  BibTeX
  @inproceedings{farber2004dampfluftinjektion, author = {Färber, Arne and Class, Holger and Jie, Ding and Koschitzky, Hans-Peter and Müller, Claudia and Ochs, Steffen Oliver and Trötschler, Oliver and Steidinger, Simon}, booktitle = {VEGAS - Statuskolloquium 2004, 05.10.2004, Universität Stuttgart}, editor = {Barczewski, B and Koschitzky, H.-P and Weber, K. & R. Wege}, isbn = {3-933761-34-4}, month = {10}, note = {, date=05.10.2004, IWS2ID=1170 , Institution: Institut für Wasserbau , Address: Universität Stuttgart }, number = 131, page = {78-87}, title = {Dampf-Luft-Injektion zur In-situ-Sanierung der gesättigten Bodenzone: Anwendungsmöglichkeiten und Erfahrungen aus einer PCE-Sanierung in Albstadt}, year = 2004 }
14. Hölzemann, S., Class, H., & Helmig, R. (2004). A New Concept for the Numerical Simulation and Parameter Identification of Multiphase Flow and Transport Processes in Cohesive Soils. In T. Schanz (Ed.), Unsaturated Soils: Numerical and Theoretical Approaches - Proceedings of the International Conference “From Experimental Evidence towards Numerical Modelling of Unsaturated Soils”, 18.09.2003 - 19.09.2003, Bauhaus-Universität Weimar. Springer-Verlag.
  - BibTeX
  BibTeX
  @inproceedings{HoelzClassHelm:2004, author = {Hölzemann, Sandra and Class, Holger and Helmig, Rainer}, booktitle = {Unsaturated Soils: Numerical and Theoretical Approaches - Proceedings of the International Conference "From Experimental Evidence towards Numerical Modelling of Unsaturated Soils", 18.09.2003 - 19.09.2003, Bauhaus-Universität Weimar}, editor = {Schanz, T.}, isbn = {3-540-21122-5}, month = {09}, note = {, date=19.09.2003, IWS2ID=579 }, publisher = {Springer-Verlag}, title = {A New Concept for the Numerical Simulation and Parameter Identification of Multiphase Flow and Transport Processes in Cohesive Soils}, year = 2004 }
15. Hölzemann, S., Class, H., & Helmig, R. (2004, June). Numerical Modeling of Multiphase Flow and Transport Processes in Cohesive Soils and Parameter Identification Strategies. 15. International Conference on Computational Methods in Water Resources, 13.06.2004 - 17.06.2004, Chapel Hill, North Carolina, USA.
  - BibTeX
  BibTeX
  @inproceedings{HoelzClassHelm:2004a, author = {Hölzemann, Sandra and Class, Holger and Helmig, Rainer}, booktitle = {15. International Conference on Computational Methods in Water Resources, 13.06.2004 - 17.06.2004, Chapel Hill, North Carolina, USA}, month = {06}, note = {, date=15.06.2004, IWS2ID=590 , Address: Chapel Hill, North Carolina, USA }, publisher = {Elsevier Science Publishers B.V.}, title = {Numerical Modeling of Multiphase Flow and Transport Processes in Cohesive Soils and Parameter Identification Strategies}, year = 2004 }
16. Helmig, R., Jakobs, H., & Class, H. (2002, June). Multiphase flow and transport modeling in heterogeneous porous media. 14. International Conference on Computational Methods in Water Resources, 23.06.2002 - 28.06.2002, Delft, The Netherlands.
  - BibTeX
  BibTeX
  @inproceedings{Helmig:2002c, author = {Helmig, Rainer and Jakobs, Hartmut and Class, Holger}, booktitle = {14. International Conference on Computational Methods in Water Resources, 23.06.2002 - 28.06.2002, Delft, The Netherlands}, month = {06}, note = {, date=25.06.2002, IWS2ID=153 , Address: Amsterdam, The Netherlands }, publisher = {Elsevier Science Publishers B.V.}, title = {Multiphase flow and transport modeling in heterogeneous porous media}, year = 2002 }
17. Class, H., Bielinski, A., & Helmig, R. (2002, October). CO2-Injektion in geologische Formationen - numerische Berechnungen und erste Überlegungen für großskalige Experimente in VEGAS. VEGAS Statuskolloquium, 12.10.2001, Universität Stuttgart.
  - BibTeX
  BibTeX
  @inproceedings{class2002co2injektion, author = {Class, Holger and Bielinski, Andreas and Helmig, Rainer}, booktitle = {VEGAS Statuskolloquium, 12.10.2001, Universität Stuttgart}, month = {10}, note = {, date=10.10.2002, IWS2ID=1373 , Institution: Institut für Wasserbau , Address: Universität Stuttgart }, title = {CO2-Injektion in geologische Formationen - numerische Berechnungen und erste Überlegungen für großskalige Experimente in VEGAS}, year = 2002 }
18. Class, H., & Helmig, R. (1999, October). Numerische Modellierung von thermisch unterstützter Bodenluftabsaugung. VEGAS Statuskolloquium, 12.10.2001, Universität Stuttgart.
  - BibTeX
  BibTeX
  @inproceedings{class1999numerische, author = {Class, Holger and Helmig, Rainer}, booktitle = {VEGAS Statuskolloquium, 12.10.2001, Universität Stuttgart}, month = {10}, note = {, date=01.10.1999, IWS2ID=1375 , Institution: Institut für Wasserbau , Address: Universität Stuttgart }, title = {Numerische Modellierung von thermisch unterstützter Bodenluftabsaugung}, year = 1999 }
Theses
1. Class, H. (1997). Numerische Untersuchungen zum Gas-Wasser-Verhalten in einem Stollen mit Verschlußbauwerk [Diplomarbeit]. Universität Stuttgart, Institut für Wasserbau.
  - BibTeX
  BibTeX
  @mastersthesis{Class:1997, author = {Class, Holger}, month = {01}, note = {, IWS2ID=177 , Institution: Institut für Wasserbau , Address: Universität Stuttgart }, school = {Universität Stuttgart, Institut für Wasserbau}, title = {Numerische Untersuchungen zum Gas-Wasser-Verhalten in einem Stollen mit Verschlußbauwerk}, type = {Diplomarbeit}, year = 1997 }
PhDs
1. Class, H. (2008). Models for non-isothermal compositional gas-liquid flow and transport in porous media [Habilitationsschrift, Universität Stuttgart, Institut für Wasserbau]. https://elib.uni-stuttgart.de/opus/volltexte/2009/3847/pdf/class_habil_version1.1.pdf
  - BibTeX
  - Link
  BibTeX
  @phdthesis{NULL, author = {Class, Holger}, month = {06}, note = {, date=16.06.2008, IWS2ID=2383 , Institution: Institut für Wasserbau , Address: Universität Stuttgart }, school = {Universität Stuttgart, Institut für Wasserbau}, title = {Models for non-isothermal compositional gas-liquid flow and transport in porous media}, type = {Habilitationsschrift}, url = {https://elib.uni-stuttgart.de/opus/volltexte/2009/3847/pdf/class_habil_version1.1.pdf}, year = 2008 }
  Link
  https://elib.uni-stuttgart.de/opus/volltexte/2009/3847/pdf/class_habil_version1.1.pdf
2. Class, H. (2001). Theorie und numerische Modellierung nichtisothermer Mehrphasenprozesse in NAPL-kontaminierten porösen Medien (Vol. 105) [Promotionsschrift, Universität Stuttgart, Institut für Wasserbau]. https://elib.uni-stuttgart.de/opus/volltexte/2005/2436/pdf/promo_holle.pdf
  - BibTeX
  - Link
  BibTeX
  @phdthesis{class2001theorie, author = {Class, Holger}, isbn = {3-933761-08-5}, month = {10}, note = {, IWS2ID=133 , Institution: Institut für Wasserbau , Address: Universität Stuttgart }, school = {Universität Stuttgart, Institut für Wasserbau}, title = {Theorie und numerische Modellierung nichtisothermer Mehrphasenprozesse in NAPL-kontaminierten porösen Medien}, type = {Promotionsschrift}, url = {https://elib.uni-stuttgart.de/opus/volltexte/2005/2436/pdf/promo_holle.pdf}, volume = 105, year = 2001 }
  Link
  https://elib.uni-stuttgart.de/opus/volltexte/2005/2436/pdf/promo_holle.pdf
Research Reports
1. Zigelli, N., Kissinger, A., & Class, H. (2014). Modeling the migration of fracturing fluids into shallow groundwater systems - literature review and numerical simulations (Bericht TB09/2014; Vol. LH222, Issue TB09/2014). https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2014/Zigelli_etal_2014.pdf
  - BibTeX
  - Link
  BibTeX
  @techreport{NULL, author = {Zigelli, Niklas and Kissinger, Alexander and Class, Holger}, month = {07}, note = {, IWS2ID=2978 , Institution: Institut für Wasserbau , Address: Universität Stuttgart }, number = {TB09/2014}, title = {Modeling the migration of fracturing fluids into shallow groundwater systems - literature review and numerical simulations}, type = {Bericht}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2014/Zigelli_etal_2014.pdf}, volume = {LH222}, year = 2014 }
  Link
  https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2014/Zigelli_etal_2014.pdf
2. Darcis, M., Flemisch, B., & Class, H. (2012). CO2-MoPa -- Kopplung von DuMux und OGS zur Verifikation der OGS-Eclipse Kopplung -- Untersuchung von zeitlichen und räumlichen Modellkopplungsstrategien zur Effizienzsteigerung (Bericht 10/12; Vol. LH221, Issue 10/12).
  - BibTeX
  BibTeX
  @techreport{NULL, author = {Darcis, Melanie and Flemisch, Bernd and Class, Holger}, month = {07}, note = {, IWS2ID=2824 , Institution: Institut für Wasserbau , Address: Universität Stuttgart }, number = {10/12}, title = {CO2-MoPa -- Kopplung von DuMux und OGS zur Verifikation der OGS-Eclipse Kopplung -- Untersuchung von zeitlichen und räumlichen Modellkopplungsstrategien zur Effizienzsteigerung}, type = {Bericht}, volume = {LH221}, year = 2012 }
3. Ebigbo, A., Phillips, A., Gerlach, R., Helmig, R., Cunningham, A. B., Class, H., & Spangler, L. H. (2012). Darcy-scale modeling of microbially induced carbonate mineral precipitation in sand columns. In Water Resources Research (Bericht No. W07519; Water Resources Research, Vol. 48, Issue W07519). https://doi.org/10.1029/2011WR011714
  - BibTeX
  BibTeX
  @techreport{NULL, author = {Ebigbo, Anozie and Phillips, Adrienne and Gerlach, Robin and Helmig, Rainer and Cunningham, Alfred B. and Class, Holger and Spangler, Lee H.}, doi = {10.1029/2011WR011714}, journal = {Water Resources Research}, month = {07}, note = {, IWS2ID=2692 , Partnerinstitution: Montana State University }, number = {W07519}, title = {Darcy-scale modeling of microbially induced carbonate mineral precipitation in sand columns}, type = {Bericht}, volume = 48, year = 2012 }
4. Class, H., Brauer, K., Kissinger, A., Walter, L., Darcis, M., & Ebigbo, A. (2011). Beeinträchtigung von Grundwasser durch Speicherung von Gasen im Untergrund (Bericht 15/2011; Vol. LH220, Issue 15/2011). https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2012/WB15-2011-LH2-20.pdf
  - BibTeX
  - Link
  BibTeX
  @techreport{NULL, author = {Class, Holger and Brauer, Kathrin and Kissinger, Alexander and Walter, Lena and Darcis, Melanie and Ebigbo, Anozie}, month = {11}, note = {, IWS2ID=2739 , Institution: Institut für Wasser- und Umweltsystemmodellierung , Address: Universität Stuttgart , Partnerinstitution: Bundesanstalt für Geowissenschaften und Rohstoffe (BGR) , Partneraddress: Hannover }, number = {15/2011}, title = {Beeinträchtigung von Grundwasser durch Speicherung von Gasen im Untergrund}, type = {Bericht}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2012/WB15-2011-LH2-20.pdf}, volume = {LH220}, year = 2011 }
  Link
  https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2012/WB15-2011-LH2-20.pdf
5. Kopp, A., Class, H., & Helmig, R. (2007). Treibhausgase in der Bodenfalle: Vol. 01_07 (Bericht No. 99; Issue 99). UNI-Kurier. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/Stuttgarter-UniKurier-Nr99-pg54-Juni2007-Treibhausgase_in_der_Bodenfalle.pdf
  - BibTeX
  - Link
  BibTeX
  @techreport{NULL, author = {Kopp, Andreas and Class, Holger and Helmig, Rainer}, month = {06}, note = {EU-Projekt CO2SINK: Numerische Simulation der Kohlendioxidspeicherung, IWS2ID=2145 , Address: Universität Stuttgart }, number = 99, page = {54}, publisher = {UNI-Kurier}, title = {Treibhausgase in der Bodenfalle}, type = {Bericht}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/Stuttgarter-UniKurier-Nr99-pg54-Juni2007-Treibhausgase_in_der_Bodenfalle.pdf}, volume = {01_07}, year = 2007 }
  Link
  https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/Stuttgarter-UniKurier-Nr99-pg54-Juni2007-Treibhausgase_in_der_Bodenfalle.pdf
6. Dogan, M. O., Class, H., & Helmig, R. (2007). Numerische Modellierung von Mehrphasenströmungs- und Transportprozessen bei der Sequestrierung von CO2 in geologischen Formationen (Bericht 09_2007; Vol. LH215, Issue 09_2007). https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/co2trap_wissenschaftlicher_bericht.pdf
  - BibTeX
  - Link
  BibTeX
  @techreport{NULL, author = {Dogan, Mehmet Onur and Class, Holger and Helmig, Rainer}, month = {07}, note = {, IWS2ID=2419 , Institution: Institut für Wasserbau , Address: Universität Stuttgart }, number = {09_2007}, title = {Numerische Modellierung von Mehrphasenströmungs- und Transportprozessen bei der Sequestrierung von CO2 in geologischen Formationen}, type = {Bericht}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/co2trap_wissenschaftlicher_bericht.pdf}, volume = {LH215}, year = 2007 }
  Link
  https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/co2trap_wissenschaftlicher_bericht.pdf
7. Assteerawatt, A., Bastian, P., Bielinski, A., Breiting, T., Class, H., Ebigbo, A., Eichel, H., Freiboth, S., Helmig, R., Kopp, A., Niessner, J., Ochs, S. O., Papafotiou, A., Paul, M., Sheta, H., & Ölmann, U. (2005). MUFTE-UG: Structure, Applications andNumerical Methods [Bericht]. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/IGWMC_newsletter_MUFTE.pdf
  - BibTeX
  - Link
  BibTeX
  @techreport{NULL, author = {Assteerawatt, Anongnart and Bastian, Peter and Bielinski, Andreas and Breiting, Thomas and Class, Holger and Ebigbo, Anozie and Eichel, Hartmut and Freiboth, Sandra and Helmig, Rainer and Kopp, Andreas and Niessner, Jennifer and Ochs, Steffen Oliver and Papafotiou, Alexandros and Paul, Maren and Sheta, Hussam and Ölmann, Ulrich}, month = {10}, note = {Volume XXIII ISSUE 2, IWS2ID=1785 , Institution: International Groundwater Modeling Centre, Colorado School of Mine }, title = {MUFTE-UG: Structure, Applications andNumerical Methods}, type = {Bericht}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/IGWMC_newsletter_MUFTE.pdf}, year = 2005 }
  Link
  https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/IGWMC_newsletter_MUFTE.pdf
8. Hazra, S. B., Class, H., Helmig, R., & Schulz, V. (2002). Forward and Inverse Problems in Modeling of Multiphase Flow and Transport Through Porous Media (Bericht 02_2002; Issue 02_2002).
  - BibTeX
  BibTeX
  @techreport{subhendu:2002, author = {Hazra, Subhendu Bikash and Class, Holger and Helmig, Rainer and Schulz, Volker}, month = {12}, note = {, IWS2ID=797 , Institution: Fachbereich IV - Mathematik , Address: Universität Trier }, number = {02_2002}, title = {Forward and Inverse Problems in Modeling of Multiphase Flow and Transport Through Porous Media}, type = {Bericht}, year = 2002 }
9. Sheta, H., Class, H., & Helmig, R. (1998). Numerische Simulation von isothermen/ nichtisothermen Mehrphasenströmungen unter Berücksichtigung der Veränderung der Fluideigenschaften. In PWAB-Statuskolloquium, 17.03.1998 - 18.03.1998, Karlsruhe (PWAB-Statuskolloquium, 17.03.1998 - 18.03.1998, Karlsruhe) [Bericht].
  - BibTeX
  BibTeX
  @techreport{Sheta:1998a, author = {Sheta, Hussam and Class, Holger and Helmig, Rainer}, booktitle = {PWAB-Statuskolloquium, 17.03.1998 - 18.03.1998, Karlsruhe}, month = {03}, note = {, date=17.03.1998, IWS2ID=96 , Institution: Forschungszentrum Karlsruhe (FZK) , Address: Karlsruhe }, title = {Numerische Simulation von isothermen/ nichtisothermen Mehrphasenströmungen unter Berücksichtigung der Veränderung der Fluideigenschaften}, type = {Bericht}, year = 1998 }

Talks

Beck, M. (2019). Conceptual approaches for the analysis of coupled hydraulic and geomechanical processes [Phdthesis, Stuttgart : Eigenverlag des Instituts für Wasser- und Umweltsystemmodellierung der Universität Stuttgart]. http://dx.doi.org/10.18419/opus-10418
- BibTeX
- Link
BibTeX
@phdthesis{beck_conceptual_2019, annotation = {http://dx.doi.org/10.18419/opus-10418}, author = {Beck, Martin}, bdsk-url-1 = {http://elib.uni-stuttgart.de/handle/11682/10435}, bdsk-url-2 = {http://dx.doi.org/10.18419/opus-10418}, date-added = {2019-07-22 23:02:37 +0200}, date-modified = {2019-07-22 23:37:51 +0200}, doi = {http://dx.doi.org/10.18419/opus-10418}, isbn = {978-3-942036-69-6}, langid = {english}, month = {11}, publisher = {Stuttgart : Eigenverlag des Instituts für Wasser- und Umweltsystemmodellierung der Universität Stuttgart}, rights = {info:eu-repo/semantics/openAccess}, school = {Universität Stuttgart}, title = {Conceptual approaches for the analysis of coupled hydraulic and geomechanical processes}, type = {phdthesis}, url = {http://elib.uni-stuttgart.de/handle/11682/10435}, urldate = {2019-07-09}, year = 2019 }
Link
http://elib.uni-stuttgart.de/handle/11682/10435
Hommel, J., Phillips, A., Gerlach, R., Cunningham, A. B., Helmig, R., & Class, H. (2018). Modeling field-scale applications of microbially induced calcium carbonate precipitation. In Computational Methods in Water Resources (CMWR) XXII, 04.06.2018 - 07.06.2018, St. Malo, Frankreich. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2018/CMWR2018Poster.pdf
- BibTeX
- Link
BibTeX
@misc{NULL, author = {Hommel, Johannes and Phillips, Adrienne and Gerlach, Robin and Cunningham, Alfred B. and Helmig, Rainer and Class, Holger}, booktitle = {Computational Methods in Water Resources (CMWR) XXII, 04.06.2018 - 07.06.2018, St. Malo, Frankreich}, month = {6}, note = {, date=04.06.2018, IWS2ID=4508 }, title = {Modeling field-scale applications of microbially induced calcium carbonate precipitation}, type = {Poster}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2018/CMWR2018Poster.pdf}, year = 2018 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2018/CMWR2018Poster.pdf
Class, H., Walter, L., Darcis, M., Ebigbo, A., & Flemisch, B. (2011). Simulation-based concepts for the evaluation of risk scenarios associated with geological storage of carbon dioxide. In Kolloquium Wasserwesen, TU Berlin, 05.05.2011, Berlin. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/vortraege/2011/simulation_based
- BibTeX
- Link
BibTeX
@misc{NULL, author = {Class, Holger and Walter, Lena and Darcis, Melanie and Ebigbo, Anozie and Flemisch, Bernd}, booktitle = {Kolloquium Wasserwesen, TU Berlin, 05.05.2011, Berlin}, month = {5}, note = {, date=05.05.2011, IWS2ID=2619 }, title = {Simulation-based concepts for the evaluation of risk scenarios associated with geological storage of carbon dioxide}, type = {Vortrag}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/vortraege/2011/simulation_based}, year = 2011 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/vortraege/2011/simulation_based
Class, H., Darcis, M., Walter, L., & Kempka, T. (2010). Coupling models of different complexity on different spatial and temporal scales for simulating CO2 storage scenarios. In Rencontres Scientifiques, High Performance Computing for CO2 Geological Storage, 14.06.2010 - 16.06.2010, Paris, France.
- BibTeX
BibTeX
@misc{NULL, author = {Class, Holger and Darcis, Melanie and Walter, Lena and Kempka, Thomas}, booktitle = {Rencontres Scientifiques, High Performance Computing for CO2 Geological Storage, 14.06.2010 - 16.06.2010, Paris, France}, month = {6}, note = {, date=14.06.2010, IWS2ID=2528 }, title = {Coupling models of different complexity on different spatial and temporal scales for simulating CO2 storage scenarios}, type = {Vortrag}, year = 2010 }
Class, H. (2010). Predictive modelling? �On matching arrival times and pressure data in Ketzin. In Norwegian-German workshop on Geological Storage of CO2, 01.06.2010 - 02.06.2010, Potsdam. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/vortraege//N-D-CCS-Workshop-Potsdam-June2010-Class.pdf
- BibTeX
- Link
BibTeX
@misc{NULL, author = {Class, Holger}, booktitle = {Norwegian-German workshop on Geological Storage of CO2, 01.06.2010 - 02.06.2010, Potsdam}, month = {6}, note = {, date=01.06.2010, IWS2ID=2527 }, title = {Predictive modelling? �On matching arrival times and pressure data in Ketzin}, type = {Vortrag}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/vortraege//N-D-CCS-Workshop-Potsdam-June2010-Class.pdf}, year = 2010 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/vortraege//N-D-CCS-Workshop-Potsdam-June2010-Class.pdf
Class, H., Darcis, M., & Walter, L. (2009). Coupled models for approaching the large scales in simulating CO2 storage in geological formations. In International Workshop on Coupled Models in Energy, Hydrological and Climate Research, 08.10.2009 - 09.10.2009, Berlin.
- BibTeX
BibTeX
@misc{NULL, author = {Class, Holger and Darcis, Melanie and Walter, Lena}, booktitle = {International Workshop on Coupled Models in Energy, Hydrological and Climate Research, 08.10.2009 - 09.10.2009, Berlin}, month = {10}, note = {, date=09.10.2009, IWS2ID=2494 }, title = {Coupled models for approaching the large scales in simulating CO2 storage in geological formations}, type = {Vortrag}, year = 2009 }
Class, H., Ebigbo, A., Darcis, M., Walter, L., Flemisch, B., Kopp, A., & Helmig, R. (2009). Intercomparison of codes and models - How can we improve reliability and understanding of model predictions for CO2 storage? In Workshop on Modelling and Risk Assessment of Geological Storage of CO2, 03.08.2009 - 07.08.2009, Longyearbyen, Svalbard.
- BibTeX
BibTeX
@misc{NULL, author = {Class, Holger and Ebigbo, Anozie and Darcis, Melanie and Walter, Lena and Flemisch, Bernd and Kopp, Andreas and Helmig, Rainer}, booktitle = {Workshop on Modelling and Risk Assessment of Geological Storage of CO2, 03.08.2009 - 07.08.2009, Longyearbyen, Svalbard}, month = {8}, note = {, date=06.08.2009, IWS2ID=2475 }, title = {Intercomparison of codes and models - How can we improve reliability and understanding of model predictions for CO2 storage?}, type = {Vortrag}, year = 2009 }
Class, H. (2009). Strömungen durch poröse Medien und in komplexen Strukturen - Beispiele und Konzepte zur Kopplung von Modellierungsansätzen.
- BibTeX
BibTeX
@misc{NULL, author = {Class, Holger}, month = {1}, note = {, date=19.01.2009, IWS2ID=2424 }, title = {Strömungen durch poröse Medien und in komplexen Strukturen - Beispiele und Konzepte zur Kopplung von Modellierungsansätzen}, type = {Vortrag}, year = 2009 }
Class, H., Ebigbo, A., Kopp, A., & Helmig, R. (2008). Numerical Investigation of CO2 Sequestration in Geological Formations - Problem-Oriented Benchmarks. In Geotechnologien Statusseminar, 20.10.2008 - 21.10.2008, Stuttgart, Haus der Wirtschaft.
- BibTeX
BibTeX
@misc{NULL, author = {Class, Holger and Ebigbo, Anozie and Kopp, Andreas and Helmig, Rainer}, booktitle = {Geotechnologien Statusseminar, 20.10.2008 - 21.10.2008, Stuttgart, Haus der Wirtschaft}, month = {10}, note = {, date=20.10.2008, IWS2ID=2382 }, title = {Numerical Investigation of CO2 Sequestration in Geological Formations - Problem-Oriented Benchmarks}, type = {Workshopbeitrag}, year = 2008 }
Class, H. (2008). Models for non-isothermal compositional gas-liquid flow and transport in porous media [Habilitationsschrift, Universität Stuttgart, Institut für Wasserbau]. https://elib.uni-stuttgart.de/opus/volltexte/2009/3847/pdf/class_habil_version1.1.pdf
- BibTeX
- Link
BibTeX
@phdthesis{NULL, author = {Class, Holger}, month = {6}, note = {, date=16.06.2008, IWS2ID=2383 , Institution: Institut für Wasserbau , Address: Universität Stuttgart }, school = {Universität Stuttgart, Institut für Wasserbau}, title = {Models for non-isothermal compositional gas-liquid flow and transport in porous media}, type = {Habilitationsschrift}, url = {https://elib.uni-stuttgart.de/opus/volltexte/2009/3847/pdf/class_habil_version1.1.pdf}, year = 2008 }
Link
https://elib.uni-stuttgart.de/opus/volltexte/2009/3847/pdf/class_habil_version1.1.pdf
Class, H. (2008). Numerical Models for Carbon Dioxide Storage in Geological Formations. In Workshop on Numerical Models for Carbon Dioxide Storage in Geological Formations, 02.04.2008 - 04.04.2008, Stuttgart.
- BibTeX
BibTeX
@misc{NULL, author = {Class, Holger}, booktitle = {Workshop on Numerical Models for Carbon Dioxide Storage in Geological Formations, 02.04.2008 - 04.04.2008, Stuttgart}, month = {4}, note = {, date=02.04.2008, IWS2ID=2380 }, title = {Numerical Models for Carbon Dioxide Storage in Geological Formations}, type = {Vortrag}, year = 2008 }
Class, H., Ebigbo, A., Helmig, R., & Darcis, M. (2007). Numerical Investigation of CO2 Sequestration in Geological Formations - Problem-Oriented Benchmarks. In Geotechnologien Statusseminar, 15.11.2007 - 16.11.2007, Hamburg. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/vortraege/BENCHMARKS_HAMBURG_07.pdf
- BibTeX
- Link
BibTeX
@misc{NULL, author = {Class, Holger and Ebigbo, Anozie and Helmig, Rainer and Darcis, Melanie}, booktitle = {Geotechnologien Statusseminar, 15.11.2007 - 16.11.2007, Hamburg}, month = {11}, note = {, date=16.11.2007, IWS2ID=2194 }, title = {Numerical Investigation of CO2 Sequestration in Geological Formations - Problem-Oriented Benchmarks}, type = {Workshopbeitrag}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/vortraege/BENCHMARKS_HAMBURG_07.pdf}, year = 2007 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/vortraege/BENCHMARKS_HAMBURG_07.pdf
Class, H., Kopp, A., & Ebigbo, A. (2007). Modeling of CO2 storage in geological formations. In IAHR Stuttgart Student Chapter Colloquium 2007, 31.10.2007 - 31.10.2007, Stuttgart.
- BibTeX
BibTeX
@misc{NULL, author = {Class, Holger and Kopp, Andreas and Ebigbo, Anozie}, booktitle = {IAHR Stuttgart Student Chapter Colloquium 2007, 31.10.2007 - 31.10.2007, Stuttgart}, month = {10}, note = {, date=31.10.2007, IWS2ID=2185 }, title = {Modeling of CO2 storage in geological formations}, type = {Vortrag}, year = 2007 }
Class, H., Ebigbo, A., Kopp, A., & Helmig, R. (2007). Numerical modeling of CO2 storage in geological formations - recent developments and challenges. In 1. French-German Symposium on Geological Storage of CO2, 21.06.2007 - 22.06.2007, Potsdam.
- BibTeX
BibTeX
@misc{NULL, author = {Class, Holger and Ebigbo, Anozie and Kopp, Andreas and Helmig, Rainer}, booktitle = {1. French-German Symposium on Geological Storage of CO2, 21.06.2007 - 22.06.2007, Potsdam}, month = {6}, note = {, date=21.06.2007, IWS2ID=2116 }, title = {Numerical modeling of CO2 storage in geological formations - recent developments and challenges}, type = {Vortrag}, year = 2007 }
Class, H., Ebigbo, A., Kopp, A., & Helmig, R. (2007). Reliability of numerical models for simulating CO2 storage in deep geological formations. In Deutsche Geophysikalische Gesellschaft - Jahrestagung, 26.03.2007 - 29.03.2007, Aachen. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/vortraege/dgg-aachen-07_mod.pdf
- BibTeX
- Link
BibTeX
@misc{NULL, author = {Class, Holger and Ebigbo, Anozie and Kopp, Andreas and Helmig, Rainer}, booktitle = {Deutsche Geophysikalische Gesellschaft - Jahrestagung, 26.03.2007 - 29.03.2007, Aachen}, month = {3}, note = {, date=28.03.2007, IWS2ID=2094 }, title = {Reliability of numerical models for simulating CO2 storage in deep geological formations}, type = {Vortrag}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/vortraege/dgg-aachen-07_mod.pdf}, year = 2007 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/vortraege/dgg-aachen-07_mod.pdf
Class, H. (2007). Models for Non-Isothermal Compositional Gas-Liquid Flow and Transport in Porous Media. In Selected Topics and International Network Lectures - Seminar Lehrstuhl für Hydromechanik und Hydrosystemmodellierung, 12.02.2007 - 13.02.2007, Stuttgart.
- BibTeX
BibTeX
@misc{NULL, author = {Class, Holger}, booktitle = {Selected Topics and International Network Lectures - Seminar Lehrstuhl für Hydromechanik und Hydrosystemmodellierung, 12.02.2007 - 13.02.2007, Stuttgart}, month = {2}, note = {, date=13.02.2007, IWS2ID=2093 }, title = {Models for Non-Isothermal Compositional Gas-Liquid Flow and Transport in Porous Media}, type = {Seminar}, year = 2007 }
Class, H., & Ebigbo, A. (2006). Numerical investigation of CO2 sequestration in geological formations - problem-oriented benchmarks. In Geotechnologien Statusseminar, 22.11.2005 - 23.11.2005, Hannover.
- BibTeX
BibTeX
@misc{NULL, author = {Class, Holger and Ebigbo, Anozie}, booktitle = {Geotechnologien Statusseminar, 22.11.2005 - 23.11.2005, Hannover}, month = {11}, note = {, date=23.11.2005, IWS2ID=2075 }, title = {Numerical investigation of CO2 sequestration in geological formations - problem-oriented benchmarks}, type = {Workshopbeitrag}, year = 2006 }
Kühn, M., Kempka, T., & Class, H. (2006). Development and Evaluation of Innovative Strategies for Sequestration and Permanent Immobilisation of CO2 in Geological Formations. In Geotechnologien Statusseminar, 21.11.2006 - 22.11.2006, Freiberg.
- BibTeX
BibTeX
@misc{NULL, author = {Kühn, Michael and Kempka, Thomas and Class, Holger}, booktitle = {Geotechnologien Statusseminar, 21.11.2006 - 22.11.2006, Freiberg}, month = {11}, note = {, date=21.11.2006, IWS2ID=2074 }, title = {Development and Evaluation of Innovative Strategies for Sequestration and Permanent Immobilisation of CO2 in Geological Formations}, type = {Workshopbeitrag}, year = 2006 }
Class, H., & Ochs, S. O. (2005). Ein Konzept zur Kopplung numerischer Module für die Simulation von Schadstoffversickerung, -susbreitung und thermischer Sanierung. In J. Braun & H. P. & M. M. Koschitzky (Eds.), Ressource Untergrund, 10 Jahre VEGAS: Forschung und Technologieentwicklung zum Schutz von Grundwasser und Boden, 28.09.2005 - 29.09.2005, Universität Stuttgart (No. 145; Issue 145).
- BibTeX
BibTeX
@inproceedings{class2005konzept, author = {Class, Holger and Ochs, Steffen Oliver}, booktitle = {Ressource Untergrund, 10 Jahre VEGAS: Forschung und Technologieentwicklung zum Schutz von Grundwasser und Boden, 28.09.2005 - 29.09.2005, Universität Stuttgart}, editor = {Braun, J and Koschitzky, H.P. & M. Müller}, isbn = {3-933761-48-4}, month = {9}, note = {, date=29.09.2005, IWS2ID=1754 , Institution: Institut für Wasserbau , Address: Universität Stuttgart }, number = 145, page = {69-78}, title = {Ein Konzept zur Kopplung numerischer Module für die Simulation von Schadstoffversickerung, -susbreitung und thermischer Sanierung}, year = 2005 }
Class, H., Bielinski, A., & Ochs, S. O. (2004). Applications of non-isothermal multiphase multicomponent models for flow and transport in porous media. In Progress in Industrial Mathematics at ECMI 2004, 21.06.2004 - 25.06.2004, Eindhoven University of Technology.
- BibTeX
BibTeX
@misc{class2004applications, author = {Class, Holger and Bielinski, Andreas and Ochs, Steffen Oliver}, booktitle = {Progress in Industrial Mathematics at ECMI 2004, 21.06.2004 - 25.06.2004, Eindhoven University of Technology}, month = {6}, note = {, date=21.06.2004, IWS2ID=1333 , Address: Eindhoven University of Technology }, title = {Applications of non-isothermal multiphase multicomponent models for flow and transport in porous media}, type = {Konferenzbeitrag}, year = 2004 }
Class, H., & Bielinski, A. (2003). Numerical modeling of nonisothermal multiphase multicomponent processes: General concepts, basic assumptions and some applications. In Workshop on Aquifer Storage of CO2, 06.11.2003 - 07.11.2003, University of Bergen, Norway.
- BibTeX
BibTeX
@misc{class2003numerical, author = {Class, Holger and Bielinski, Andreas}, booktitle = {Workshop on Aquifer Storage of CO2, 06.11.2003 - 07.11.2003, University of Bergen, Norway}, month = {11}, note = {, date=06.11.2003, IWS2ID=1339 , Address: University of Bergen, Norway }, title = {Numerical modeling of nonisothermal multiphase multicomponent processes: General concepts, basic assumptions and some applications}, type = {Workshopbeitrag}, year = 2003 }
Class, H., & Acosta, M. (2003). Numerical modelling of non-isothermal multiphase multicomponent processes in porous media: 1. General concepts, basic assumptions, and example applications 2. The model concept applied to describe the processes in the cathode diffusion layer of a PEM-fuel cell. In MACSI-Net Working Group 14: “Filtration Problems in porous media and paper manufacturing” (Workshop 2003), 21.11.2003 - 22.11.2003, Universität Stuttgart.
- BibTeX
BibTeX
@misc{class2003numerical, author = {Class, Holger and Acosta, Maria}, booktitle = {MACSI-Net Working Group 14: "Filtration Problems in porous media and paper manufacturing" (Workshop 2003), 21.11.2003 - 22.11.2003, Universität Stuttgart}, month = {11}, note = {, date=21.11.2003, IWS2ID=1334 }, title = {Numerical modelling of non-isothermal multiphase multicomponent processes in porous media: 1. General concepts, basic assumptions, and example applications 2. The model concept applied to describe the processes in the cathode diffusion layer of a PEM-fuel cell}, type = {Konferenzbeitrag}, year = 2003 }
Class, H., Bielinski, A., & Helmig, R. (2002, October). CO2-Injektion in geologische Formationen - numerische Berechnungen und erste Überlegungen für großskalige Experimente in VEGAS. VEGAS Statuskolloquium, 12.10.2001, Universität Stuttgart.
- BibTeX
BibTeX
@inproceedings{class2002co2injektion, author = {Class, Holger and Bielinski, Andreas and Helmig, Rainer}, booktitle = {VEGAS Statuskolloquium, 12.10.2001, Universität Stuttgart}, month = {10}, note = {, date=10.10.2002, IWS2ID=1373 , Institution: Institut für Wasserbau , Address: Universität Stuttgart }, title = {CO2-Injektion in geologische Formationen - numerische Berechnungen und erste Überlegungen für großskalige Experimente in VEGAS}, year = 2002 }
Class, H., Bielinski, A., & Helmig, R. (2001, October). Numerische Simulation von Mehrphasen-Mehrkomponenten-Systemen: Effiziente Algorithmen, Möglichkeiten und Probleme. VEGAS Statuskolloquium, 12.10.2001, Universität Stuttgart.
- BibTeX
BibTeX
@inproceedings{class2001numerische, author = {Class, Holger and Bielinski, Andreas and Helmig, Rainer}, booktitle = {VEGAS Statuskolloquium, 12.10.2001, Universität Stuttgart}, month = {10}, note = {, date=12.10.2001, IWS2ID=1374 , Institution: Institut für Wasserbau , Address: Universität Stuttgart }, title = {Numerische Simulation von Mehrphasen-Mehrkomponenten-Systemen: Effiziente Algorithmen, Möglichkeiten und Probleme}, year = 2001 }
Class, H., & Helmig, R. (1999, October). Numerische Modellierung von thermisch unterstützter Bodenluftabsaugung. VEGAS Statuskolloquium, 12.10.2001, Universität Stuttgart.
- BibTeX
BibTeX
@inproceedings{class1999numerische, author = {Class, Holger and Helmig, Rainer}, booktitle = {VEGAS Statuskolloquium, 12.10.2001, Universität Stuttgart}, month = {10}, note = {, date=01.10.1999, IWS2ID=1375 , Institution: Institut für Wasserbau , Address: Universität Stuttgart }, title = {Numerische Modellierung von thermisch unterstützter Bodenluftabsaugung}, year = 1999 }
Class, H. (1999, August). Numerical Simulation of Non-isothermal Steam Injection Processes in NAPL-Contaminated Porous Media. 28. IAHR Congress: Hydraulic Engineering for Sustainable Water Resources Management at the Turn of the Millennium, 22.08.1999 - 27.08.1999, Graz, Austria.
- BibTeX
BibTeX
@inproceedings{Class:1999a, author = {Class, Holger}, booktitle = {28. IAHR Congress: Hydraulic Engineering for Sustainable Water Resources Management at the Turn of the Millennium, 22.08.1999 - 27.08.1999, Graz, Austria}, month = {8}, note = {(CD-ROM), date=25.08.1999, IWS2ID=104 , Address: Graz, Austria }, title = {Numerical Simulation of Non-isothermal Steam Injection Processes in NAPL-Contaminated Porous Media}, year = 1999 }
Sheta, H., Class, H., & Helmig, R. (1998). Numerische Simulation von isothermen/ nichtisothermen Mehrphasenströmungen unter Berücksichtigung der Veränderung der Fluideigenschaften. In PWAB-Statuskolloquium, 17.03.1998 - 18.03.1998, Karlsruhe (PWAB-Statuskolloquium, 17.03.1998 - 18.03.1998, Karlsruhe) [Bericht].
- BibTeX
BibTeX
@techreport{Sheta:1998a, author = {Sheta, Hussam and Class, Holger and Helmig, Rainer}, booktitle = {PWAB-Statuskolloquium, 17.03.1998 - 18.03.1998, Karlsruhe}, month = {3}, note = {, date=17.03.1998, IWS2ID=96 , Institution: Forschungszentrum Karlsruhe (FZK) , Address: Karlsruhe }, title = {Numerische Simulation von isothermen/ nichtisothermen Mehrphasenströmungen unter Berücksichtigung der Veränderung der Fluideigenschaften}, type = {Bericht}, year = 1998 }

Posters

Seitz, G., Helmig, R., & Class, H. (2019). Model Coupling in thermochemical Heat Storage. In InterPore 2019. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2019/2019_SeitzG_Interpore_Poster.pdf
- BibTeX
- Link
BibTeX
@misc{seitz2019interpore, author = {Seitz, Gabriele and Helmig, Rainer and Class, Holger}, booktitle = {InterPore 2019}, month = {5}, title = {Model Coupling in thermochemical Heat Storage}, type = {Poster Session}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2019/2019_SeitzG_Interpore_Poster.pdf}, year = 2019 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2019/2019_SeitzG_Interpore_Poster.pdf
Scherrer, S., Haslauer, C., Class, H., Klaas, N., & Braun, J. (2019). Änalytische Berechnung periodisch betriebener Wärmequellen im Untergrund" (Poster). Der Geothermiekongress 2019, München.
- BibTeX
BibTeX
@presentation{scherrer2019analytische, author = {Scherrer, Samuel and Haslauer, Claus and Class, Holger and Klaas, Norbert and Braun, Jürgen}, eventdate = {19.-21. November}, eventtitle = {Der Geothermiekongress 2019}, title = {"Analytische Berechnung periodisch betriebener Wärmequellen im Untergrund" (Poster)}, venue = {München}, year = 2019 }
Hommel, J., Phillips, A., Gerlach, R., Cunningham, A. B., Helmig, R., & Class, H. (2018). Modeling field-scale applications of microbially induced calcium carbonate precipitation. In Computational Methods in Water Resources (CMWR) XXII, 04.06.2018 - 07.06.2018, St. Malo, Frankreich. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2018/CMWR2018Poster.pdf
- BibTeX
- Link
BibTeX
@misc{NULL, author = {Hommel, Johannes and Phillips, Adrienne and Gerlach, Robin and Cunningham, Alfred B. and Helmig, Rainer and Class, Holger}, booktitle = {Computational Methods in Water Resources (CMWR) XXII, 04.06.2018 - 07.06.2018, St. Malo, Frankreich}, month = {6}, note = {, date=04.06.2018, IWS2ID=4508 }, title = {Modeling field-scale applications of microbially induced calcium carbonate precipitation}, type = {Poster}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2018/CMWR2018Poster.pdf}, year = 2018 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2018/CMWR2018Poster.pdf
Beck, M., & Class, H. (2018). Comparison of sequential and fully-coupled approaches for flow and geomechanics. In European Geosciences Union (EGU) - General Assembly, 08.04.2018 - 13.04.2018, Vienna, Austria.
- BibTeX
BibTeX
@misc{NULL, author = {Beck, Martin and Class, Holger}, booktitle = {European Geosciences Union (EGU) - General Assembly, 08.04.2018 - 13.04.2018, Vienna, Austria}, month = {4}, note = {, date=12.04.2018, IWS2ID=4511 }, title = {Comparison of sequential and fully-coupled approaches for flow and geomechanics}, type = {Poster}, year = 2018 }
Hommel, J., Phillips, A., Gerlach, R., Cunningham, A. B., Helmig, R., & Class, H. (2018). Modeling field-scale applications of microbially induced calcium carbonate precipitation. In 2nd International Conference on Simulation Technology (SimTech 2018), 26.03.2018 - 28.03.2018, Stuttgart. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2018/SimTech2018Poster.pdf
- BibTeX
- Link
BibTeX
@misc{NULL, author = {Hommel, Johannes and Phillips, Adrienne and Gerlach, Robin and Cunningham, Alfred B. and Helmig, Rainer and Class, Holger}, booktitle = {2nd International Conference on Simulation Technology (SimTech 2018), 26.03.2018 - 28.03.2018, Stuttgart}, month = {3}, note = {, date=27.03.2018, IWS2ID=4529 , Institution: SimTech }, title = {Modeling field-scale applications of microbially induced calcium carbonate precipitation}, type = {Poster}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2018/SimTech2018Poster.pdf}, year = 2018 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2018/SimTech2018Poster.pdf
Glaeser, D., Helmig, R., Flemisch, B., & Class, H. (2017). A discrete fracture model using a cell-centered finite volume scheme with multi-point flux approximation. In 9th International Conference on Porous Media & Annual Meeting (InterPore), 08.05.2017 - 11.05.2017, Rotterdam, Netherlands. https://www.new.interpore.org/interpore-rotterdam-2017
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BibTeX
@misc{glaeserinterpore2017, author = {Glaeser, Dennis and Helmig, Rainer and Flemisch, Bernd and Class, Holger}, booktitle = {9th International Conference on Porous Media \& Annual Meeting (InterPore), 08.05.2017 - 11.05.2017, Rotterdam, Netherlands}, month = {5}, title = {A discrete fracture model using a cell-centered finite volume scheme with multi-point flux approximation}, type = {Poster session}, url = {https://www.new.interpore.org/interpore-rotterdam-2017}, year = 2017 }
Link
https://www.new.interpore.org/interpore-rotterdam-2017
Seitz, G., Helmig, R., & Class, H. (2017). Numerical Model of a Ca(OH)2 / CaO thermochemical heat storage reactor. In 9th International Conference on Porous Media & Annual Meeting - InterPore 2017, 08.05.2017 - 11.05.2017, Rotterdam, The Netherlands. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2017/Seitz_IWS_Interpore2017.pdf
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@misc{NULL, author = {Seitz, Gabriele and Helmig, Rainer and Class, Holger}, booktitle = {9th International Conference on Porous Media & Annual Meeting - InterPore 2017, 08.05.2017 - 11.05.2017, Rotterdam, The Netherlands}, month = {5}, note = {, IWS2ID=4459 }, title = {Numerical Model of a Ca(OH)2 / CaO thermochemical heat storage reactor}, type = {Poster}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2017/Seitz_IWS_Interpore2017.pdf}, year = 2017 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2017/Seitz_IWS_Interpore2017.pdf
Hommel, J., Ebigbo, A., Gerlach, R., Cunningham, A. B., Helmig, R., & Class, H. (2016). Finding a balance between accuracy and computational effort for modeling biomineralization. In 1st SRP NUPUS Meeting, 05.10.2016 - 07.10.2016, Mühlhausen im Täle. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2016/Hommel_NUPUS_Poster_2016.pdf
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@misc{NULL, author = {Hommel, Johannes and Ebigbo, Anozie and Gerlach, Robin and Cunningham, Alfred B. and Helmig, Rainer and Class, Holger}, booktitle = {1st SRP NUPUS Meeting, 05.10.2016 - 07.10.2016, Mühlhausen im Täle}, month = {10}, note = {, date=05.10.2016, IWS2ID=4395 }, title = {Finding a balance between accuracy and computational effort for modeling biomineralization}, type = {Poster}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2016/Hommel_NUPUS_Poster_2016.pdf}, year = 2016 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2016/Hommel_NUPUS_Poster_2016.pdf
Hommel, J., Ebigbo, A., Gerlach, R., Cunningham, A. B., Helmig, R., & Class, H. (2016). Finding a balance between accuracy and effort for modeling biomineralization. In Gordon Research Conference on Flow and Transport in Permeable Media, 01.08.2016 - 05.08.2016, Girona, Spanien. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2016/Gordon_Hommel_2016.pdf
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@misc{NULL, author = {Hommel, Johannes and Ebigbo, Anozie and Gerlach, Robin and Cunningham, Alfred B. and Helmig, Rainer and Class, Holger}, booktitle = {Gordon Research Conference on Flow and Transport in Permeable Media, 01.08.2016 - 05.08.2016, Girona, Spanien}, month = {8}, note = {, date=03.08.2016, IWS2ID=4384 , Institution: Gordon Research Conferences }, title = {Finding a balance between accuracy and effort for modeling biomineralization}, type = {Poster}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2016/Gordon_Hommel_2016.pdf}, year = 2016 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2016/Gordon_Hommel_2016.pdf
Hommel, J., Ebigbo, A., Gerlach, R., Cunningham, A. B., Helmig, R., & Class, H. (2016). Finding a balance between accuracy and effort for modeling biomineralization. In Gordon Research Seminar on Flow and Transport in Permeable Media, 30.07.2016 - 31.07.2016, Girona, Spanien. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2016/Gordon_Hommel_2016.pdf
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BibTeX
@misc{NULL, author = {Hommel, Johannes and Ebigbo, Anozie and Gerlach, Robin and Cunningham, Alfred B. and Helmig, Rainer and Class, Holger}, booktitle = {Gordon Research Seminar on Flow and Transport in Permeable Media, 30.07.2016 - 31.07.2016, Girona, Spanien}, month = {7}, note = {, date=30.07.2016, IWS2ID=4388 , Institution: Gordon Research Conferences }, title = {Finding a balance between accuracy and effort for modeling biomineralization}, type = {Poster}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2016/Gordon_Hommel_2016.pdf}, year = 2016 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2016/Gordon_Hommel_2016.pdf
Glaeser, D., Class, H., Kissinger, A., & Beck, M. (2016). Towards a parameterized model for risk assessment in shale gas exploration. In European Geosciences Union General Assembly (2016), 17.04.2016 - 22.04.2016, Vienna, Austria. https://www.egu2016.eu/
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@misc{glaeseregu2016, author = {Glaeser, Dennis and Class, Holger and Kissinger, Alex and Beck, Martin}, booktitle = {European Geosciences Union General Assembly (2016), 17.04.2016 - 22.04.2016, Vienna, Austria}, month = {4}, title = {Towards a parameterized model for risk assessment in shale gas exploration}, type = {Poster session}, url = {https://www.egu2016.eu/}, year = 2016 }
Link
https://www.egu2016.eu/
Hommel, J., Ebigbo, A., Gerlach, R., Cunningham, A. B., Helmig, R., & Class, H. (2016). Finding a balance between accuracy and computational effort for modeling biomineralization. In EGU General Assembly 2016, 18.04.2016 - 22.04.2016, Vienna, Austria. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2016/EGU_Hommel_2016.pdf
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BibTeX
@misc{NULL, author = {Hommel, Johannes and Ebigbo, Anozie and Gerlach, Robin and Cunningham, Alfred B. and Helmig, Rainer and Class, Holger}, booktitle = {EGU General Assembly 2016, 18.04.2016 - 22.04.2016, Vienna, Austria}, month = {4}, note = {, date=19.04.2016, IWS2ID=4355 }, title = {Finding a balance between accuracy and computational effort for modeling biomineralization}, type = {Poster}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2016/EGU_Hommel_2016.pdf}, year = 2016 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2016/EGU_Hommel_2016.pdf
Hommel, J., Ebigbo, A., Gerlach, R., Cunningham, A. B., Helmig, R., & Class, H. (2015). Finding a balance between accuracy and effort for modeling biomineralization. In NUPUS annual meeting 2015 , 08.09.2015 - 12.09.2015, Freudenstadt. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2015/NUPUS_Hommel_2015.pdf
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BibTeX
@misc{NULL, author = {Hommel, Johannes and Ebigbo, Anozie and Gerlach, Robin and Cunningham, Alfred B. and Helmig, Rainer and Class, Holger}, booktitle = {NUPUS annual meeting 2015 , 08.09.2015 - 12.09.2015, Freudenstadt}, month = {9}, note = {, date=11.09.2015, IWS2ID=3110 }, title = {Finding a balance between accuracy and effort for modeling biomineralization}, type = {Poster}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2015/NUPUS_Hommel_2015.pdf}, year = 2015 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2015/NUPUS_Hommel_2015.pdf
Beck, M., Seitz, G., Class, H., & Helmig, R. (2015). A new phenomenological approach to modelling of shear failure in porous media. In NUPUS annual meeting 2015 , 08.09.2015 - 12.09.2015, Freudenstadt. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2015/NupusPoster_Beck_2015.pdf
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@misc{NULL, author = {Beck, Martin and Seitz, Gabriele and Class, Holger and Helmig, Rainer}, booktitle = {NUPUS annual meeting 2015 , 08.09.2015 - 12.09.2015, Freudenstadt}, month = {9}, note = {, date=09.09.2015, IWS2ID=3109 }, title = {A new phenomenological approach to modelling of shear failure in porous media}, type = {Poster}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2015/NupusPoster_Beck_2015.pdf}, year = 2015 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2015/NupusPoster_Beck_2015.pdf
Hommel, J., Lauchnor, E., Phillips, A., Gerlach, R., Cunningham, A. B., Helmig, R., Ebigbo, A., & Class, H. (2015). A revised model for microbially induced calcite precipitation - improvements and insights. In 7th International Conference on Porous Media & Annual Meeting - InterPore 2015, 18.05.2015 - 21.05.2015, Padua, Italy. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2015/InterPore_Hommel_2015.pdf
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@misc{NULL, author = {Hommel, Johannes and Lauchnor, Ellen and Phillips, Adrienne and Gerlach, Robin and Cunningham, Alfred B. and Helmig, Rainer and Ebigbo, Anozie and Class, Holger}, booktitle = {7th International Conference on Porous Media & Annual Meeting - InterPore 2015, 18.05.2015 - 21.05.2015, Padua, Italy}, month = {5}, note = {, date=19.05.2015, IWS2ID=3056 }, title = {A revised model for microbially induced calcite precipitation - improvements and insights}, type = {Poster}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2015/InterPore_Hommel_2015.pdf}, year = 2015 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2015/InterPore_Hommel_2015.pdf
Hommel, J., Lauchnor, E., Cunningham, A. B., Helmig, R., Ebigbo, A., & Class, H. (2014). Improvements in Modeling Microbially Induced Calcite Precipitation as a Leakage Mitigation Technology. In Gordon Research Seminar on Flow and Transport in Permeable Media 2014, 05.07.2014 - 06.07.2014, Lewiston, Maine, USA. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2015/Gordon_Hommel_2014.pdf
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BibTeX
@misc{NULL, author = {Hommel, Johannes and Lauchnor, Ellen and Cunningham, Alfred B. and Helmig, Rainer and Ebigbo, Anozie and Class, Holger}, booktitle = {Gordon Research Seminar on Flow and Transport in Permeable Media 2014, 05.07.2014 - 06.07.2014, Lewiston, Maine, USA}, month = {7}, note = {, date=05.07.2014, IWS2ID=3138 , Institution: Gordon Research Conferences }, title = {Improvements in Modeling Microbially Induced Calcite Precipitation as a Leakage Mitigation Technology}, type = {Poster}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2015/Gordon_Hommel_2014.pdf}, year = 2014 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2015/Gordon_Hommel_2014.pdf
Beck, M., Darcis, M., Class, H., & Helmig, R. (2014). Spatial model coupling - an efficient scheme to combine hydraulic and geomechanic simulations. In Gordon Research Conference on Flow and Transport in Permeable Media 2014, 06.07.2014 - 11.07.2014, Lewiston, Maine, USA. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2014/GordonPosterBeck.pdf
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@misc{NULL, author = {Beck, Martin and Darcis, Melanie and Class, Holger and Helmig, Rainer}, booktitle = {Gordon Research Conference on Flow and Transport in Permeable Media 2014, 06.07.2014 - 11.07.2014, Lewiston, Maine, USA}, month = {7}, note = {, date=0000-00-00, IWS2ID=2940 }, title = {Spatial model coupling - an efficient scheme to combine hydraulic and geomechanic simulations}, type = {Poster}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2014/GordonPosterBeck.pdf}, year = 2014 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2014/GordonPosterBeck.pdf
Hommel, J., Lauchnor, E., Cunningham, A. B., Helmig, R., Ebigbo, A., & Class, H. (2014). Improvements in Modeling Microbially Induced Calcite Precipitation as a Leakage Mitigation Technology. In Gordon Research Conference on Flow and Transport in Permeable Media 2014, 06.07.2014 - 11.07.2014, Lewiston, Maine, USA. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2014/Gordon_Hommel_2014.pdf
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BibTeX
@misc{NULL, author = {Hommel, Johannes and Lauchnor, Ellen and Cunningham, Alfred B. and Helmig, Rainer and Ebigbo, Anozie and Class, Holger}, booktitle = {Gordon Research Conference on Flow and Transport in Permeable Media 2014, 06.07.2014 - 11.07.2014, Lewiston, Maine, USA}, month = {7}, note = {, date=08.07.2014, IWS2ID=2937 }, title = {Improvements in Modeling Microbially Induced Calcite Precipitation as a Leakage Mitigation Technology}, type = {Poster}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2014/Gordon_Hommel_2014.pdf}, year = 2014 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2014/Gordon_Hommel_2014.pdf
Hommel, J., Lauchnor, E., Cunningham, A. B., Helmig, R., Ebigbo, A., & Class, H. (2014). Estimation of uncertain parameters to improve modeling of Microbially Induced Calcite Precipitation. In European Geoscience Union General Assembly 2014, 28.04.2014 - 02.05.2014, Vienna, Austria. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2014/EGU_Hommel_2014.pdf
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BibTeX
@misc{NULL, author = {Hommel, Johannes and Lauchnor, Ellen and Cunningham, Alfred B. and Helmig, Rainer and Ebigbo, Anozie and Class, Holger}, booktitle = {European Geoscience Union General Assembly 2014, 28.04.2014 - 02.05.2014, Vienna, Austria}, month = {5}, note = {, date=02.05.2014, IWS2ID=2923 , Institution: European Geosciences Union }, title = {Estimation of uncertain parameters to improve modeling of Microbially Induced Calcite Precipitation}, type = {Poster}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2014/EGU_Hommel_2014.pdf}, year = 2014 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2014/EGU_Hommel_2014.pdf
Hommel, J., Cunningham, A. B., Helmig, R., Ebigbo, A., & Class, H. (2014). Estimation of uncertain parameters of the biomineralization model by inverse modeling. In NUPUS annual meeting 2014, 16.03.2014 - 19.03.2014, Freudenstadt. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2014/Nupus-Meeting_Hommel_2014.pdf
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BibTeX
@misc{NULL, author = {Hommel, Johannes and Cunningham, Alfred B. and Helmig, Rainer and Ebigbo, Anozie and Class, Holger}, booktitle = {NUPUS annual meeting 2014, 16.03.2014 - 19.03.2014, Freudenstadt}, month = {3}, note = {, date=17.03.2014, IWS2ID=2917 }, title = {Estimation of uncertain parameters of the biomineralization model by inverse modeling}, type = {Poster}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2014/Nupus-Meeting_Hommel_2014.pdf}, year = 2014 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2014/Nupus-Meeting_Hommel_2014.pdf
Class, H., Flemisch, B., Helmig, R., Baber, K., Faigle, B., Grüninger, C., Kissinger, A., Schmid, K. S., Schneider, M., Schröder, N., Schwenck, N., & Walter, L. (2014). Dumux: Dune for Multi-Phase, Component, Scale, Physics, ... Flow and Transport in Porous Media. In NumPor Annual Meeting 2014, 02.03.2014 - 03.03.2014, KAUST, Kingdom of Saudi Arabia.
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BibTeX
@misc{kaustPoster2014, author = {Class, Holger and Flemisch, Bernd and Helmig, Rainer and Baber, Katherina and Faigle, Benjamin and Grüninger, Christoph and Kissinger, Alexander and Schmid, Karen Sophie and Schneider, Martin and Schröder, Natalie and Schwenck, Nicolas and Walter, Lena}, booktitle = {NumPor Annual Meeting 2014, 02.03.2014 - 03.03.2014, KAUST, Kingdom of Saudi Arabia}, month = {3}, note = {, date=02.03.2014, IWS2ID=2914 }, title = {Dumux: Dune for Multi-Phase, Component, Scale, Physics, ... Flow and Transport in Porous Media}, type = {Poster}, year = 2014 }
Kleinknecht, S., Braun, J., & Class, H. (2014). Migration and Retention of a Heavy NAPL Vapor in the Unsaturated Zone. In 8th NUPUS Meeting. http://www.iws.uni-stuttgart.de/publikationen/vegas/NUPUSConferenceKleinknecht.pdf
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@misc{kleinknecht2014migration, author = {Kleinknecht, Simon and Braun, Jürgen and Class, Holger}, booktitle = {8th NUPUS Meeting}, month = {3}, note = {, date=15.03.2014, IWSID=2970 }, title = {Migration and Retention of a Heavy NAPL Vapor in the Unsaturated Zone}, type = {Poster Session}, url = {http://www.iws.uni-stuttgart.de/publikationen/vegas/NUPUSConferenceKleinknecht.pdf}, year = 2014 }
Link
http://www.iws.uni-stuttgart.de/publikationen/vegas/NUPUSConferenceKleinknecht.pdf
Hommel, J., Cunningham, A. B., Ebigbo, A., Helmig, R., & Class, H. (2013). Numerical investigation of microbially induced calcite precipitation as leakage mitigation technology. In NUPUS-Conference, 30.09.2013 - 02.10.2013, Bergen, Norway. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2013/NUPUS-Conference_Hommel_2013.pdf
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BibTeX
@misc{NULL, author = {Hommel, Johannes and Cunningham, Alfred B. and Ebigbo, Anozie and Helmig, Rainer and Class, Holger}, booktitle = {NUPUS-Conference, 30.09.2013 - 02.10.2013, Bergen, Norway}, month = {10}, note = {, date=30.09.2013, IWS2ID=2867 }, title = {Numerical investigation of microbially induced calcite precipitation as leakage mitigation technology}, type = {Poster}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2013/NUPUS-Conference_Hommel_2013.pdf}, year = 2013 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2013/NUPUS-Conference_Hommel_2013.pdf
Oladyshkin, S., Schröder, P., Class, H., & Nowak, W. (2013). Chaos Expansion Based Bootstrap Filter To Calibrate CO2 Injection. In EGU General Assembly, 07.04.2013 - 11.04.2013, Vienna, Austria: Vol. Vol.15.
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@misc{NULL, author = {Oladyshkin, Sergey and Schröder, Patrick and Class, Holger and Nowak, Wolfgang}, booktitle = {EGU General Assembly, 07.04.2013 - 11.04.2013, Vienna, Austria}, month = {4}, note = {, date=10.04.2013, IWS2ID=2876 }, page = {EGU2013-3214}, title = {Chaos Expansion Based Bootstrap Filter To Calibrate CO2 Injection}, type = {Poster}, volume = {Vol.15}, year = 2013 }
Hommel, J., Cunningham, A. B., Helmig, R., Ebigbo, A., & Class, H. (2013). Numerical investigation of microbially induced calcite precipitation as leakage mitigation technology. In NUPUS annual Meeting 17-20 March 2013, 17.03.2013 - 20.03.2013, Freudenstadt. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2013/Nupus-Meeting_Hommel_2013.pdf
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BibTeX
@misc{NULL, author = {Hommel, Johannes and Cunningham, Alfred B. and Helmig, Rainer and Ebigbo, Anozie and Class, Holger}, booktitle = {NUPUS annual Meeting 17-20 March 2013, 17.03.2013 - 20.03.2013, Freudenstadt}, month = {3}, note = {, date=19.03.2013, IWS2ID=2868 }, title = {Numerical investigation of microbially induced calcite precipitation as leakage mitigation technology}, type = {Poster}, url = {https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2013/Nupus-Meeting_Hommel_2013.pdf}, year = 2013 }
Link
https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/2013/Nupus-Meeting_Hommel_2013.pdf
Oladyshkin, S., Class, H., Helmig, R., & Nowak, W. (2011). Efficient Bayesian updating with particle filters based on polynomial chaos expansion for CO2 storage. In AGU Fall Meeting 2011, 05.12.2011 - 09.12.2011, San Francisco, USA.
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BibTeX
@misc{NULL, author = {Oladyshkin, Sergey and Class, Holger and Helmig, Rainer and Nowak, Wolfgang}, booktitle = {AGU Fall Meeting 2011, 05.12.2011 - 09.12.2011, San Francisco, USA}, month = {12}, note = {Abstract GC51A-0928, IWS2ID=2697 }, title = {Efficient Bayesian updating with particle filters based on polynomial chaos expansion for CO2 storage}, type = {Poster}, year = 2011 }
Oladyshkin, S., Class, H., Helmig, R., & Nowak, W. (2011). Modeling of underground carbon dioxide storage: data-driven robust design and probabilistic risk assessment. In SimTech 2011 - International Conference on Simulation Technology 2011, 14.06.2011 - 17.06.2011, Stuttgart.
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BibTeX
@misc{NULL, author = {Oladyshkin, Sergey and Class, Holger and Helmig, Rainer and Nowak, Wolfgang}, booktitle = {SimTech 2011 - International Conference on Simulation Technology 2011, 14.06.2011 - 17.06.2011, Stuttgart}, month = {6}, note = {, IWS2ID=2691 }, title = {Modeling of underground carbon dioxide storage: data-driven robust design and probabilistic risk assessment}, type = {Poster}, year = 2011 }
Walter, L., Class, H., Oladyshkin, S., Flemisch, B., & Helmig, R. (2011). Influence of Dirichlet boundary conditions on risk assessment for CO2 storage in geological formations. In SimTech 2011 - International Conference on Simulation Technology 2011, 14.06.2011 - 17.06.2011, Stuttgart.
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BibTeX
@misc{NULL, author = {Walter, Lena and Class, Holger and Oladyshkin, Sergey and Flemisch, Bernd and Helmig, Rainer}, booktitle = {SimTech 2011 - International Conference on Simulation Technology 2011, 14.06.2011 - 17.06.2011, Stuttgart}, month = {6}, note = {, IWS2ID=2641 }, title = {Influence of Dirichlet boundary conditions on risk assessment for CO2 storage in geological formations}, type = {Poster}, year = 2011 }
Walter, L., Oladyshkin, S., Class, H., Darcis, M., & Helmig, R. (2010). A study on pressure evolution in a sand channel system during CO2 injection. In Greenhouse Gas Control Technologies (GHGT10), 19.09.2010 - 23.09.2010, Amsterdam, The Netherlands.
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@misc{NULL, author = {Walter, Lena and Oladyshkin, Sergey and Class, Holger and Darcis, Melanie and Helmig, Rainer}, booktitle = {Greenhouse Gas Control Technologies (GHGT10), 19.09.2010 - 23.09.2010, Amsterdam, The Netherlands}, month = {9}, note = {, IWS2ID=2598 }, title = {A study on pressure evolution in a sand channel system during CO2 injection}, type = {Poster}, year = 2010 }
Mosthaf, K., Class, H., Flemisch, B., Helmig, R., Leijnse, T., & Rybak, I. (2009). Multi-component modeling of porous-media flow coupled with free flow. In European Geosciences Union (EGU) - General Assembly, 20.04.2009 - 24.04.2009, Wien, Österreich.
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@misc{NULL, author = {Mosthaf, Klaus and Class, Holger and Flemisch, Bernd and Helmig, Rainer and Leijnse, Toon and Rybak, Iryna}, booktitle = {European Geosciences Union (EGU) - General Assembly, 20.04.2009 - 24.04.2009, Wien, Österreich}, month = {4}, note = {, IWS2ID=2590 }, title = {Multi-component modeling of porous-media flow coupled with free flow}, type = {Poster}, year = 2009 }
Darcis, M., Class, H., & Flemisch, B. (2008). Coupling Models of Different Complexity for the Simulation of CO2 Storage in Saline Aquifers. In 9th International Conference on Greenhouse Gas Control Technologies (GHGT9), 16.11.2008 - 20.11.2008, Washington DC, USA.
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@misc{NULL, author = {Darcis, Melanie and Class, Holger and Flemisch, Bernd}, booktitle = {9th International Conference on Greenhouse Gas Control Technologies (GHGT9), 16.11.2008 - 20.11.2008, Washington DC, USA}, month = {12}, note = {, IWS2ID=2390 }, title = {Coupling Models of Different Complexity for the Simulation of CO2 Storage in Saline Aquifers}, type = {Poster}, year = 2008 }
Winkler, A., Class, H., & Helmig, R. (2002). An Efficient Solution Technique for the Numerical Simulation of Thermally Enhanced Soil Vapour Extraction. In International Groundwater Symposium: “Bridging the Gap between Measurement and Modeling in Heterogeneous Media”, 25.03.2002 - 28.03.2002, Berkeley, USA.
- BibTeX
BibTeX
@misc{winkler2002efficient, author = {Winkler, Angela and Class, Holger and Helmig, Rainer}, booktitle = {International Groundwater Symposium: "Bridging the Gap between Measurement and Modeling in Heterogeneous Media", 25.03.2002 - 28.03.2002, Berkeley, USA}, month = {3}, note = {, IWS2ID=831 , Institution: Lawrence Berkeley Laboratory , Address: University of California, Berkeley, USA }, page = {534-538}, title = {An Efficient Solution Technique for the Numerical Simulation of Thermally Enhanced Soil Vapour Extraction}, type = {Poster}, year = 2002 }

Supervised student assignements

Coupling between a detailed model and a large-scale model for exchanging density-dependent salt fluxes. (2022). (Masterarbeit). Universität Stuttgart, Institut für Wasser-und Umweltsystemmodellierung, Lehrstuhl für Hydromechanik und Hydrosystemmodellierung.
A 0-dimensional conceptual model to facilitate coupling of groundwater and surface-water numerical models - and its application to a bog-wetland study area. (2021). (Masterarbeit). Universität Stuttgart, Institut für Wasser-und Umweltsystemmodellierung, Lehrstuhl für Hydromechanik und Hydrosystemmodellierung.
Density-driven dissolution of CO2 in karst water - longterm monitoring and modelling in a water column. (2021). (Masterarbeit). Universität Stuttgart, Institut für Wasser-und Umweltsystemmodellierung, Lehrstuhl für Hydromechanik und Hydrosystemmodellierung.
Modeling calcite dissolution due to density-induced fingering of CO2-enriched water. (2021). (Master’s Thesis).
Kalibrierung eines realistischen Grundwassermodells mit FEPEST. (2020). (Masterarbeit). Universität Stuttgart, Institut für Wasser-und Umweltsystemmodellierung, Lehrstuhl für Hydromechanik und Hydrosystemmodellierung.
Grundlagenuntersuchung zum saugseitigen Filter im DNOX-Fördermodul. (2020). (Masterarbeit). Universität Stuttgart, Institut für Wasser-und Umweltsystemmodellierung, Lehrstuhl für Hydromechanik und Hydrosystemmodellierung.
Experimentelle Visualisierung von Konvektion durch in Wasser gelöstes CO2. (2018). Universität Stuttgart.
Steam Assisted Gravity Drainage - Comparison of continuous and cyclic injection on field and laboratory scale. (2015). (Diplomarbeit). Universität Stuttgart, Institut für Wasser- und Umweltsystemmodellierung.
Effects of pH Control Techniques on Transport of Zero-Valent Iron Nanoparticles in an Aquifer. (2012). (Master’s Thesis).
Vereinfachte Methoden zur Flutwellenabschätzung. (2011). (Bachelorarbeit). Universität Stuttgart, Institut für Wasserbau.
Steam Injection Technique for In Situ Remediation of Chlorinated Hydrocarbons from Low Permeable Saturated Zones - Experiment and Numerical Approach. (2011). (Diplomarbeit). Universität Stuttgart, Institut für Wasserbau.
Numerical Investigations of Flow through Fractured Porous Media. (2007). (Masterthesis).
Erarbeitung und Implementierung eines Modellkonzepts zur Simulation von Strömungs- und Transportprozessen im menschlichen Gehirn. (2007). (Diplomarbeit). Universität Stuttgart, Institut für Wasserbau.
Entwicklung und Implementierung eines numerischen Modellkonzepts zur Simulation von Alkoholspülungsprozessen in DNAPL-kontaminierten Grundwasserleitern. (2005). (Diplomarbeit). Stuttgart, Institut für Wasserbau.
Numerical Modeling of Methane Adsorption and Transport Processes in Mined Areas. (2005). (Masterthesis).
Numerische Modellierung von Strömungs- und Transportvorgängen für Mehrphasen-Mehrkomponenten-Systeme in geklüftet porösen Medien. (2001). (Diplomarbeit). Technische Universität Braunschweig, Institut für ComputerAnwendungen im Bauingenieurwesen.
Skalenbetrachtungen zur Modellierung von Salzwasserintrusionsprozessen. (2000). (Studienarbeit). Technische Universität Braunschweig, Institut für ComputerAnwendungen im Bauingenieurwesen.
Unterschiedliche Raumdiskretisierungsansätze zur numerischen Modellierung nichtisothermer Dreiphasen-Dreikomponentenströmungen in porösen Medien. (1999). (Diplomarbeit). Technische Universität Braunschweig, Institut für ComputerAnwendungen im Bauingenieurwesen.

Current research projects

Experimental and numerical investigations on density-driven dissolution of CO2 and related carbonate dissolution in karst water
Duration: 11/2022 - 10/2025
Department: LH2
Leader: Holger Class
Funding: DFG
TrinkXtrem: Adaptation strategies of public drinking water supply to extreme events
Duration: 02/2022 - 01/2025
Department: LH2
Leader: Rainer Helmig, Holger Class
Funding: BMBF
EXC 2075: Coupled flow, transport, and geochemical processes in fractures/fissures with a focus on geothermal and karstic systems
Duration: 10/2021 - 12/2024
Department: LH2
Leader: Rainer Helmig, Holger Class, Bernd Flemisch
Funding: DFG
RADIOMOD: Modelling of hydrodynamics and mass transport for water-bound transport processes
Duration: 09/2019 - 03/2023
Department: LH2
Leaders: Bernd Flemisch, Holger Class
Funding: BfS
SFB 1313, C04: Pore-scale and REV-scale approaches to biological and chemical pore-space alteration in porous media
Duration: 01/2018 - 12/2025
Department: LH2
Leader: Holger Class
Funding: DFG
AK-NERO: Working Group Nerochytic Speleogenesis
Department: LH2
Leader: Holger Class

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