Dieses Bild zeigt  Holger Class

Herr apl. Prof. Dr.-Ing.

Holger Class

Stellvertreter des Lehrstuhlinhabers
Institut für Wasser- und Umweltsystemmodellierung
Lehrstuhl für Hydromechanik und Hydrosystemmodellierung

Kontakt

+49 711 685-64678
+49 711 685-60430

Visitenkarte (VCF)

Pfaffenwaldring 61
70569 Stuttgart
Deutschland
Raum: 1.012

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Environmental Fluid Mechanics I Vorlesung | Übung

Abitur

Juni 1991 in Münsingen

Akademische Grade

1997: Diplom im Bauingenieurwesen (Dipl.-Ing), Universität Stuttgart
2000: Promotion (Dr.-Ing.), Technische Universität Braunschweig
2008: Habilitation (Dr.-Ing. habil.), Universität Stuttgart

Akademischer Werdegang

1998 - 2000: akademischer Mitarbeiter, Institut für Computeranwendungen, Technische Universität Braunschweig
2000 - 2004: akademischer Mitarbeiter, Institut für Wasser- und Umweltsystemmodellierung, Universität Stuttgart
seit 2004: Akademischer Rat, Institut für Wasser- und Umweltsystemmodellierung, Universität Stuttgart
2011: Ernennung zum außerplanmäßigen Professor, Institut für Wasser- und Umweltsystemmodellierung, Universität Stuttgart

  • 1999: erster Preis der John F. Kennedy Student Paper Competition während des 28. Kongresses der International Association for Hydraulic Research in Graz
  • 2006: Preis der Umweltschutztechnik für die beste Lehrveranstaltung ("Hydromechanik")

Publikationen

  1. article

    1. Emmert, S., Davis, K., Gerlach, R., & Class, H. (n.d.). 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
    2. Emmert, S., Class, H., Davis, K. J., & Gerlach, R. (n.d.). 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/https://doi.org/10.1016/j.coal.2020.103567
    3. Hommel, J., Akyel, A., Frieling, Z., Phillips, A. J., Gerlach, R., Cunningham, A. B., & Class, H. (n.d.). A Numerical Model for Enzymatically Induced Calcium Carbonate Precipitation. Applied Sciences, 10(13), 4538. https://doi.org/10.3390/app10134538
    4. Beck, M., Rinaldi, A. P., Flemisch, B., & Class, H. (n.d.). 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
    5. Class, H., Weishaupt, K., & Trötschler, O. (n.d.). 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
    6. Koch, T., Gläser, D., Weishaupt, K., Ackermann, S., Beck, M., Becker, B., Burbulla, S., Class, H., Coltman, E., Emmert, S., Fetzer, T., Grüninger, C., Heck, K., Hommel, J., Kurz, T., Lipp, M., Mohammadi, F., Scherrer, S., Schneider, M., … Flemisch, B. (n.d.). DuMux 3 – an open-source simulator for solving flow and transport problems in porous media with a focus on model coupling. Computers & Mathematics with Applications. https://doi.org/10.1016/j.camwa.2020.02.012
    7. Seitz, G., Helmig, R., & Class, H. (n.d.). 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
    8. Beck, M., & Class, H. (n.d.). Modelling fault reactivation with characteristic stress-drop terms. Advances in Geosciences, 49, 1--7. https://doi.org/10.5194/adgeo-49-1-2019
    9. Gläser, D., Flemisch, B., Helmig, R., & Class, H. (n.d.). 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
    10. Cunningham, A. B., Class, H., Ebigbo, A., Gerlach, R., Phillips, A. J., & Hommel, J. (n.d.). Field-scale modeling of microbially induced calcite precipitation. Computational Geosciences, 23(2), 399--414. https://doi.org/10.1007/s10596-018-9797-6
    11. Koch, T., Heck, K., Schröder, N., Class, H., & Helmig, R. (2018). A new simulation framework for soil-root interaction, evaporation, root growth, and solute transport. Vadose Zone Journal. https://doi.org/10.2136/vzj2017.12.0210
    12. 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
    13. Hommel, J., Coltman, E., & Class, H. (2018). Porosity-Permeability Relations for Evolving Pore Space: A Review with a Focus on (Bio-)geochemically Altered Porous Media. Transport in Porous Media, 2(124), Article 124. https://doi.org/10.1007/s11242-018-1086-2
    14. 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
    15. 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).
    16. Beck, M., Seitz, G., & Class, H. (2016). Volume-Based Modelling of Fault Reactivation in Porous Media Using a Visco-Elastic Proxy Model. Transport in Porous Media.
    17. Kissinger, A., Noack, V., Knopf, S., Konrad, W., Scheer, D., & Class, H. (2016). Brine migration along vertical pathways due to CO2 injection - a simulated case study in the North German Basin with stakeholder involvement. https://doi.org/10.5194/hess-2016-281
    18. 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
    19. 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
    20. Gläser, D., Dell’Oca, A., Tatomir, A., Bensabat, J., Class, H., Guadagnini, A., Helmig, R., McDermott, C., Riva, M., & Sauter, M. (n.d.). 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
    21. 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).
    22. 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
    23. Kleinknecht, S., Class, H., & Braun, J. (2015). Density-driven migration of heavy NAPL vapor in the unsaturated zone. Vadose Zone Journal, 14(8). https://doi.org/10.2136/vzj2014.12.0173
    24. 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.
    25. 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.
    26. 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
    27. Gerbersdorf, S. U., Cimatoribus, C., Class, H., Engesser, K.-H., Helbich, S., Hollert, H., Lange, C., Kranert, M., Metzger, J. W., Nowak, W., Seiler, T.-B., Steger, K., Steinmetz, H., & Wieprecht, S. (2015). Anthropogenic Trace Compounds (ATCs) in aquatic habitats - Research needs on sources, fate, detection and toxicity to ensure timely elimination strategies and risk management. Environment International, Vol.79.2015. https://doi.org/10.1016/j.envint.2015.03.011
    28. Kissinger, A., Noack, V., Knopf, S., Scheer, D., Konrad, W., & Class, H. (2014). Characterization of reservoir conditions for CO2 storage using a dimensionless Gravitational Number applied to the North German Basin. Sustainable Energy Technologies and Assessments, 7. https://doi.org/10.1016/j.seta.2014.06.003
    29. 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.
    30. 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
    31. 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.
    32. Oladyshkin, S., Class, H., & Nowak, W. (2013). Bayesian updating via Bootstrap filtering combined with data-driven polynomial chaos expansions: methodology and application to history matching for carbon dioxide storage in geological formations. Computational Geosciences, 17(4), Article 4. https://doi.org/10.1007/s10596-013-9350-6
    33. 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
    34. Oladyshkin, S., Schröder, P., Class, H., & Nowak, W. (2013). Chaos expansion based Bootstrap filter to calibrate CO2 injection models. Energy Procedia, 40, Article 40. https://doi.org/10.1016/j.egypro.2013.08.046
    35. Lange, T., Sauter, M., Heitfeld, M., Schetelig, K., Brosig, K., Jahnke, W., Kissinger, A., Helmig, R., Ebigbo, A., & Class, H. (2013). Hydraulic fracturing in unconventional gas reservoirs: risks in the geological system, part 1. Environmental Earth Sciences. https://doi.org/10.1007/s12665-013-2803-3
    36. 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
    37. 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.
    38. 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
    39. 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
    40. Walter, L., Binning, P. J., Oladyshkin, S., Flemisch, B., & Class, H. (2012). Brine migration resulting from CO2 injection into saline aquifers - An approach to risk estimation including various levels of uncertainty. International Journal of Greenhouse Gas Control, 9. https://www.sciencedirect.com/science/article/pii/S1750583612001077
    41. 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.
    42. 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
    43. 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
    44. 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
    45. 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
    46. 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.
    47. 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
    48. 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
    49. 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
    50. Ebigbo, A., Helmig, R., Cunningham, A. B., Class, H., & Gerlach, R. (2010). Modelling biofilm growth in the presence of carbon dioxide and water flow in the subsurface. Advances in Water Resources, 33(7), Article 7. https://doi.org/10.1016/j.advwatres.2010.04.004
    51. 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
    52. 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
    53. 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
    54. 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
    55. 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
    56. 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
    57. 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
    58. 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.
    59. Freiboth, S., Class, H., Helmig, R., Graf, T., Ehlers, W., Schwarz, V., & Vrettos, C. (2009). A model for multiphase flow and transport in porous media including a phenomenological approach to account for deformation - a model concept and its validation within a code intercomparison study (No. 3). 13(3), Article 3. https://doi.org/10.1007/s10596-008-9118-6
    60. Dogan, M. O., Class, H., & Helmig, R. (2009). Different concepts for the coupling of porous-media flow with lower-dimensional pipe flow. Computer Modeling in Engineering & Sciences, 53(3), Article 3. https://doi.org/10.3970/cmes.2009.053.207
    61. 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
    62. 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
    63. Ebigbo, A., Class, H., & Helmig, R. (2007). CO2 leakage through an abandoned well: Problem-oriented benchmarks (No. 2). 11(2), Article 2. https://doi.org/10.1007/s10596-006-9033-7
    64. 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
    65. 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.
  2. book

    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
    2. Helmig, R., & Class, H. (2005). Grundlagen der Hydromechanik. Shaker Verlag.
  3. incollection

    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.
  4. inproceedings

    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
    2. Oladyshkin, S., Class, H., Helmig, R., & Nowak, W. (2011). Data-driven framework for history matching: application to carbon dioxide storage in geological formations. European Geosciences Union (EGU) - General Assembly, 03.04.2011 - 08.04.2011, Vienna, Austria, Vol.13(EGU2011-11), Article EGU2011-11.
    3. 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.
    4. 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.
    5. 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.
    6. 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.
    7. 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.
    8. Kopp, A., Probst, P., Class, H., Hurter, S., & Helmig, R. (2008, November). Estimation of CO2 Storage Capacity Coefficients in Geologic Formations. 9th International Conference on Greenhouse Gas Control Technologies (GHGT9), 16.11.2008 - 20.11.2008, Washington DC, USA.
    9. 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
    10. Freiboth, S., Class, H., & Helmig, R. (2007). Numerical Simulation of Multiphase Multicomponent Processes Considering Structural Alterations of Porous Media - a Phenomenological Model. In T. Schanz (Ed.), Theoretical and Numerical Unsaturated Soil Mechanics. Springer-Verlag.
    11. Ochs, S. O., Class, H., Helmig, R., & Acosta, M. (2007). Simulation of multiphase multicomponent processes in the diffusion layer of PEM fuel cells. In M. Qintard (Ed.), Eurotherm 81, ALbi, France, 04.06.2007 - 06.06.2007, Albi, France.
    12. 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).
    13. 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.
    14. 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).
    15. 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).
    16. 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).
    17. 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).
    18. Bielinski, A., Class, H., & Helmig, R. (2003, October). Numerische Simulation von CO2-Speicherung im Untergrund. 4. Workshop “Porous Media”, 05.12.2002 - 06.12.2002, Blaubeuren.
    19. Jakobs, H., Bielinski, A., Class, H., & Helmig, R. (2002). Modeling of heterogeneities for twophase flow in the subsurface. International Conference on Multifield Problems, 08.04.2002 - 10.04.2002, Stuttgart, 12(WOS:000189408100035), Article WOS:000189408100035.
    20. 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.
    21. Class, H., & Helmig, R. (1999, October). Numerische Modellierung von thermisch unterstützter Bodenluftabsaugung. VEGAS Statuskolloquium, 12.10.2001, Universität Stuttgart.
  5. phdthesis

    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
  6. techreport

    1. Class, H., Kissinger, A., Knopf, S., Konrad, W., Noack, V., & Scheer, D. (2015). Schlussbericht: Mehrstufige und regionale Charakterisierung potentieller CO2-Speicherformationen unter besonderer Berücksichtigung von Soleaufstiegsrisiken - ein integrierter natur- und sozialwissenschaftlicher Ansatz (Bericht 04/15; Vol. LH223, Issue 04/15).
    2. 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
    3. 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).
    4. 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
    5. 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
    6. Ebigbo, A., Class, H., & Helmig, R. (2008). Numerische Untersuchung zur CO2 Sequestrierung in geologischen Formationen - problemorientierte Benchmarks (Bericht 10_2008; Vol. LH218, Issue 10_2008).
    7. 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
    8. 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
    9. Helmig, R., Class, H., Ölmann, U., & Niessner, J. (2006). Multiphase Processes in Porous Media. In R. Helmig & B. Mielke Alexanderand Wohlmuth (Eds.), Multifield Problems in Solid and Fluid Mechanics (Bericht No. 28; Multifield Problems in Solid and Fluid Mechanics, Issue 28). Springer-Verlag.
    10. 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

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