This image showsRainer Helmig

Prof. Dr.-Ing.

Rainer Helmig

Head
Institute for Modelling Hydraulic and Environmental Systems
Department of Hydromechanics and Modelling of Hydrosystems

Magne Espedal Adjunct Professor, University of Bergen

Contact

+49 711 685-64741
+49 711 685-60430

Business card (VCF)

Pfaffenwaldring 61
70569 Stuttgart
Germany
Room: 1.015

Office Hours

During winter term 2020/2021 the weekly office hours take place every Tuesday from 1:00pm to 2:00pm. Due to the current situation there will be no office hours on place in person. If you need any advice or discussions, please feel free to get in touch via e-mail. Then we will arrange an online-appointment at the above mentioned time.  

Career

Since 2000: Full Professor, Institute for Modelling Hydraulic and Environmental Systems, University of Stuttgart
1998-2020: Full Professor, Institute of Computer Applications in Civil Engineering, TU Braunschweig
1997-1998: Acting Professor, Institute of Computer Applications in Civil Engeneering, TU Braunschweig
1993-1997: Research Assistant, Institute of Hydraulic Engineering, University of Stuttgart
1988-1992: Research Assistant, Institute of Fluid Mechanics, University of Hannover
1986-1988: Ingenieur, Land Nordrhein-Westfalen

Academic Degrees

1996: Habilitation degree (Dr.-Ing. habil.), University of Stuttgart
1993: Doctoral degree (Dr.-Ing.), University of Hannover
1986: Graduation in Civil Engeneering (Dipl.-Ing.), University of Hannover
1981: Graduation in Civil Engineering (Dipl.-Ing. (FH)), University of Applied Sciences, Münster

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1995: Dresden Prize for Groundwater Research
2008: Teaching award for lectures in Hydromechanics, University of Stuttgart
since 2010: Elected member of the Heidelberg Academy of Sciences and Humanities
2012: NOW-von Humboldt Stiftung award
2013: Shell lecture 2013, Rice University, Houston, USA
2013: InterPore-Rosette, International Society for Porous Media
2015: Henry Darcy Distinguished Lecturer, National Groundwater Association (NGWA)
since 2017: Elected member of the German Academy of Science and Engineering
2019: Honorary Lifetime Membership Award, International Society for Porous Media (InterPore)
2019 – 2022: Magne Espedal Honorary Professor at the University of Bergen, Norway
2020: AGU Fellow 2020, American Geophysical Union

since 1999: Member of the Editorial Board of "Advances in Water Research"
since 2007: Member of the Editorial Board of "Computational Geosciences"
since 2009: Course Coordinator of the study program "Simulation Technology" at the University of Stuttgart
since 2018: Principal investigator and member of the Executive Board of the Cluster of Excellence EXC 2075 “Data-integrated Simulation Science” (Simtech) at the University of Stuttgart
since 2018: Spokesperson and Principal Investigator of the Collaborative Research Centre (SFB) 1313 “Interface-Driven Multi-Field Processes in Porous Media: Flow, Transport and Deformation”, University of Stuttgart

Publications

  1. (Journal-) Articles

    1. Koch, T., Weishaupt, K., Müller, J., Weigand, B., & Helmig, R. (2021). A (Dual) Network Model for Heat Transfer in Porous Media. Transport in Porous Media. https://doi.org/10.1007/s11242-021-01602-5
    2. Kurgyis, K., Hommel, J., Flemisch, B., Helmig, R., & Ott, H. (2021). Explicit continuum scale modeling of low-salinity mechanisms. Journal of Petroleum Science and Engineering, 199, 108336. https://doi.org/10.1016/j.petrol.2020.108336
    3. Weishaupt, K., Koch, T., & Helmig, R. (2021). A fully implicit coupled pore-network/free-flow model for the pore-scale simulation of drying processes. Drying Technology, 0(0), 1--22. https://doi.org/10.1080/07373937.2021.1955706
    4. Ghosh, T., Bringedal, C., Helmig, R., & Sekhar, G. P. R. (2020). Upscaled equations for two-phase flow in highly heterogeneous porous media: Varying permeability and porosity. Advances in Water Resources, 145, 103716. https://doi.org/10.1016/j.advwatres.2020.103716
    5. de Winter, M., Weishaupt, K., Scheller, S., Frey, S., Raoof, A., Hassanizadeh, M., & Helmig, R. (2020). The Complexity of Porous Media Flow Characterized in a Microfluidic Model Based on Confocal Laser Scanning Microscopy and Micro-PIV. Transport in Porous Media. https://doi.org/10.1007/s11242-020-01515-9
    6. 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
    7. Schneider, M., Weishaupt, K., Gläser, D., Boon, W. M., & Helmig, R. (2020). Coupling staggered-grid and MPFA finite volume methods for free flow/porous-medium flow problems. Journal of Computational Physics, 401. https://doi.org/10.1016/j.jcp.2019.109012
    8. Yang, G., Terzis, A., Zarikos, I., Hassanizadeh, S. M., Weigand, B., & Helmig, R. (2019). Internal flow patterns of a droplet pinned to the hydrophobic surfaces of a confined microchannel using micro-PIV and VOF simulations. Chemical Engineering Journal, 370, 444–454. https://doi.org/10.1016/j.cej.2019.03.191
    9. Bilke, L., Flemisch, B., Kalbacher, T., Kolditz, O., Helmig, R., & Nagel, T. (2019). Development of Open-Source Porous Media Simulators: Principles and Experiences. Transport in Porous Media, 130(1), 337--361. https://doi.org/10.1007/s11242-019-01310-1
    10. Weishaupt, K., Joekar-Niasar, V., & Helmig, R. (2019). An efficient coupling of free flow and porous media flow using the pore-network modeling approach. Journal of Computational Physics: X, 1, 100011. https://doi.org/10.1016/j.jcpx.2019.100011
    11. 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
    12. Schneider, M., Flemisch, B., Helmig, R., Terekhov, K., & Tchelepi, H. (2018). Monotone nonlinear finite-volume method for challenging grids. Computational Geosciences. https://doi.org/10.1007/s10596-017-9710-8
    13. Gao, B., Davarzani, H., Helmig, R., & Smits, K. M. (2018). Experimental and numerical study of evaporation from wavy surfaces by coupling free flow and porous media flow. Water Resources Research. https://doi.org/10.1029/2018WR023423
    14. Vidotto, E., Helmig, R., Schneider, M., & Wohlmuth, B. (2018). Streamline method for resolving sharp fronts for complex two-phase flow in porous media. Computational Geosciences, 22(6), 1487--1502. https://doi.org/10.1007/s10596-018-9767-z
    15. Schneider, M., Köppl, T., Helmig, R., Steinle, R., & Hilfer, R. (2018). Stable propagation of saturation overshoots for two-phase flow in porous media. Transport in Porous Media, 121(3), Article 3. https://doi.org/10.1007/s11242-017-0977-y
    16. Praditia, T., Helmig, R., & Hajibeygi, H. (2018). Multiscale formulation for coupled flow-heat equations arising from single-phase flow in fractured geothermal reservoirs. Computational Geosciences. https://doi.org/10.1007/s10596-018-9754-4
    17. Schneider, M., Gläser, D., Flemisch, B., & Helmig, R. (2018). Comparison of finite-volume schemes for diffusion problems. Oil & Gas Science and Technology – Revue d’IFP Energies Nouvelles, 73. https://ogst.ifpenergiesnouvelles.fr/articles/ogst/pdf/2018/01/ogst180050.pdf
    18. 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
    19. Terzis, A., Roumeli, E., Weishaupt, K., Brack, S., Aslannejad, H., Groß, J., Hassanizadeh, S. M., Helmig, R., & Weigand, B. (2017). Heat release at the wetting front during capillary filling of cellulosic micro-substrates. Journal of Colloid and Interface Science. https://doi.org/10.1016/j.jcis.2017.06.027
    20. Gupta, S., Wohlmuth, B. I., & Helmig, R. (2016). Multi-rate time stepping schemes for hydro-geomechanical model for subsurface methane hydrate reservoirs. Advances in Water Resources, 91. https://doi.org/10.1016/j.advwatres.2016.02.013
    21. Fattahi, E., Waluga, C., Wohlmuth, B. I., Rüde, U., Manhard, M., & Helmig, R. (2016). Lattice Boltzmann methods in porous media simulations: laminar to turbulent flow. Computers and Fluids, 140.
    22. Jambhekar, V. A., Mejri, E., Schröder, N., Helmig, R., & Shokri, N. (2016). Kinetic Approach to Model Reactive Transport and Mixed Salt Precipitation in a Coupled Free-Flow–Porous-Media System. Transport in Porous Media. https://doi.org/10.1007/s11242-016-0665-3
    23. Lindner, F., Nuske, P., Weishaupt, K., Helmig, R., Mundt, C., & Pfitzner, M. (2016). Transpiration cooling with local thermal nonequilibrium: Model comparison in multiphase flow in porous media. Journal of Porous Media, 19. https://doi.org/10.1615/JPorMedia.v19.i2.30
    24. 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
    25. 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
    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. Lindner, F., Nuske, P., Helmig, R., Mundt, C., & Pfitzner, M. (2014). Transpiration Cooling with Local Thermal Non-Equilibrium: Model Comparison in Multiphase Flow in Porous Media. Journal of Porous Media.
    28. 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
    29. 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
    30. 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
    31. Stoverud, K. H., Darcis, M., Helmig, R., & Hassanizadeh, S. M. (2012). Modeling concentration distribution and deformation during convection-enhanced drug delivery into brain tissue. Transport in Porous Media, 92(1), Article 1.
    32. Fritz, J., Flemisch, B., & Helmig, R. (2011). Decoupled and multiphysics models for non-isothermal compositional two-phase flow in porous media. International Journal of Numerical Analysis & Modeling, 9(1), Article 1. https://www.math.ualberta.ca/ijnam/Volume-9-2012/No-1-12/2012-01-02.pdf
    33. 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
    34. Flemisch, B., Darcis, M., Erbertseder, K., Faigle, B., Lauser, A., Mosthaf, K., Müthing, S., Nuske, P., Tatomir, A., Wolff, M., & Helmig, R. (2011). DUMUX: DUNE for multi-phase, component, scale, physics, ... flow and transport in porous media. Advances in Water Resources, 34(9), Article 9. https://doi.org/10.1016/j.advwaters.2011.03.007
    35. Szymkiewicz, A., Helmig, R., & Neuweiler, I. (2011). Upscaling unsaturated flow in binary porous media with air entry pressure effects. Water Resources Research, 48. https://doi.org/10.1029/2011WR010893
    36. Cao, Y., Helmig, R., & Wohlmuth, B. I. (2011). A two-scale operator-splitting method for two-phase flow in porous media. Advances in Water Resources, 34(12), Article 12. https://doi.org/10.1016/j.advwatres.2011.07.002
    37. Lauser, A., Hager, C., Helmig, R., & Wohlmuth, B. I. (2011). A new approach for phase transitions in miscible multi-phase flow in porous media. Advances in Water Resources, 34(8), Article 8. https://doi.org/10.1016, j.advwaters.2011.04.021
    38. 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
    39. 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
    40. van Noorden, T. L., Pop, I. S., Ebigbo, A., & Helmig, R. (2010). An upscaled model for biofilm growth in a thin strip. Water Resources Research, 46. https://doi.org/10.1029/2009WR008217
    41. Papafotiou, A., Sheta, H., & Helmig, R. (2010). Numerical modeling of two-phase hysteresis combined with an interface condition for heterogeneous porous media. Computational Geosciences, 14(2), Article 2. https://doi.org/10.1007/s10596-009-9151-0
    42. Helmig, R., Weiss, A., & Wohlmuth, B. I. (2009). Variational inequalities for modeling flow in heterogeneous porous media with entry pressure. Computational Geosciences, 13(3), Article 3. https://doi.org/10.1007/s10596-008-9125-7
    43. 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
    44. 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
    45. 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.
    46. Papafotiou, A., Helmig, R., Schaap, J., Lehmann, P., Kaestner, A., Flühler, H., Neuweiler, I., Hassanein, R., Ahrenholz, B., Tölke, J., Peters, A., & Durner, W. (2008). From the pore scale to the lab scale: 3D lab experiment and numerical simulation of drainage in heterogeneous porous media. Advances in Water Resources, 31(9), Article 9. https://doi.org/10.1016/j.advwatres.2007.09.006
    47. Manthey, S., Hassanizadeh, S. M., Helmig, R., & Hilfer, R. (2008). Dimensional analysis of two-phase flow including a rate-dependent capillary pressure-saturation relationship. Advances in Water Resources, 31(9), Article 9. https://doi.org/10.1016/j.advwatres.2008.01.021
    48. 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
    49. Niessner, J., & Helmig, R. (2007). Multi-scale modeling of three-phase--three-component processes in heterogeneous porous media. Advances in Water Resources, 30(11), Article 11. https://doi.org/10.1016/j.advwatres.2007.05.008
    50. Reichenberger, V., Jakobs, H., Bastian, P., & Helmig, R. (2006). A mixed-dimensional finite volume method for two-phase flow in fractured porous media. Advances in Water Resources, 29(7), Article 7. https://doi.org/10.1016/j.advwatres.2005.09.001
    51. Niessner, J., Helmig, R., Jakobs, H., & Roberts, J. (2005). Interface condition and linearization schemes in the Newton iterations for two-phase flow in heterogeneous porous media (No. 7). 28(7), Article 7. https://doi.org/10.1016/j.advwatres.2005.01.006
    52. Hilfer, R., & Helmig, R. (2004). Dimensional analysis and upscaling of two-phase flow in porous media with piecewise constant heterogeneities (No. 10). 27(10), Article 10. https://doi.org/10.1016/j.advwatres.2004.07.003
    53. 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
    54. 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
    55. Helmig, R., & Huber, R. U. (1998). Comparison of Galerkin-type discretization techniques for two-phase flow in heterogeneous porous media (No. 8). 21(8), Article 8. https://doi.org/10.1016/S0309-1708(97)00023-7
    56. Helmig, R., & Zielke, W. (1996). Finite Elemente Simulation von Mehrphasenvorgängen im klüftigen Gestein. 1.
  2. Contributions to anthologies

    1. Troldborg, M., Nowak, W., Binning, P. J., Bjerg, P. L., & Helmig, R. (2010). Uncertainty estimation of the mass discharge from a contaminated site using a fully Bayesian framework. In M. Schirmer & et al. (Eds.), Groundwater Quality 2010, 13.06.2010 - 18.06.2010, Zürich, Schweiz. IAHS Redbook.
    2. Hinkelmann, R., & Helmig, R. (2004). Mehrphasenmodelle für die ungesättigte Bodenzone - neue Modellierungsansätze in der Hydrologie. In Tag der Hydrologie 2004: Wasser- und Stofftransport in heterogenen Einzugsgebieten. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/hinkelmann/HinkHel_TagHyd_2004.pdf
    3. Ölmann, U., Hinkelmann, R., & Helmig, R. (2002). Parallel Two-Phase Flow Simulations in Porous Media. In E. & W. J. Krause (Ed.), High Performance Computing in Science and Engineering ’02. Springer-Verlag.
    4. Hinkelmann, R., Sheta, H., Helmig, R., Sauter, E. J., & Schlüter, M. (2000). Numerical Simulation of Water-Gas Flow and Transport Processes in Coastal Aquifers. In K. & Y. I. Sato (Ed.), Groundwater Updates. Springer-Verlag. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/hinkelmann/saitama.ps.gz
  3. Conference papers

    1. Köppl, T., Helmig, R., & Wohlmuth, B. I. (2015, October). A multi-scale model for mass transport in arteries and tissue. 3rd International Workshop on Computational Engineering CE 2014, 06.10.2014 - 10.10.2014, Universität Stuttgart.
    2. Kissinger, A., Helmig, R., & Ebigbo, A. (2012). Modellierung des Transports von Frack-Fluiden, Lagerstättenwasser und Methan. In W. Frenz & P. K. andAxel Preuße (Eds.), 14. Aachener Altlasten- und Bergschadenkundliches Kolloquium: Unkonventionelle Gasgewinnung in NRW, 03.07.2012, Aachen (Vol. 99). GDMB Gesellschaft.
    3. Richter, T., Rudlof, S., Adjibadji, B., Bernlöhr, H., Grüninger, C., Munz, C.-D., Rohde, C., & Helmig, R. (2012, January). ViPLab - A Virtual Programming Laboratory for Mathematics and Engineering. 2011 IEEE International Symposium on Multimedia (ISM), 05.12.2011 - 07.12.2011, Dana Point, California USA.
    4. Enzenhöfer, R., Nowak, W., & Helmig, R. (2010). Using probabilistic well vulnerability criteria for a risk-based preventive drinking water safety concept. In M. Schirmer & et al. (Eds.), Groundwater Quality 2010, 13.06.2010 - 18.06.2010, Zürich, Schweiz. IAHS Redbook. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/S84REnzenhofer_review.pdf
    5. 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.
    6. Troldborg, M., Nowak, W., Binning, P. J., Bjerg, P. L., & Helmig, R. (2009, September). Quantifying uncertainty in mass discharge estimates from contaminated sites using a fully Bayesian framework. ModelCARE: Calibration and Reliability in Groundwater Modeling - Managing Groundwater and the Environment, 20.09.2009 - 23.09.2009, Wuhan, China.
    7. 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.
    8. Flemisch, B., Fritz, J., Helmig, R., Niessner, J., & Wohlmuth, B. I. (2007). DUMUX: a multi-scale multi-physics toolbox for flow and transport processes in porous media. In A. Ibrahimbegovic & F. Dias (Eds.), ECCOMAS Thematic Conference on Multi-scale Computational Methods for Solids and Fluids, 28.11.2007 - 30.11.2007, Paris, France. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/cachan_flemisch.pdf
    9. 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).
    10. Manthey, S., Oung, O., Hassanizadeh, S. M., & Helmig, R. (2004). Dynamic capillary pressure effects in two-phase flow in heterogeneous porous media. In C. T. Miller, W. F. Farthing, & W. G. & G. F. P. Gray (Eds.), 15. International Conference on Computational Methods in Water Resources, 13.06.2004 - 17.06.2004, Chapel Hill, North Carolina, USA (Vol. 1). Elsevier Science Publishers B.V.
    11. Niessner, J., Helmig, R., Jakobs, H., & Roberts, J. (2004). Interface condition and exact linearization in the Newton iterations for two-phase flow in heterogeneous porous media. In C. T. Miller, W. F. Farthing, & W. G. & G. F. P. Gray (Eds.), 15. International Conference on Computational Methods in Water Resources, 13.06.2004 - 17.06.2004, Chapel Hill, North Carolina, USA (Vol. 1). Elsevier Science Publishers B.V. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/niessner_2004.pdf
    12. 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.
    13. Kobayashi, K., Hinkelmann, R., & Helmig, R. (2003). Comparison of different model concepts for gas-water processes in the subsurface. In J. & P. P. Ganoulis (Ed.), 30. IAHR Congress: Water Engineering and Research in a Learning Society, 24.08.2003 - 29.08.2003, Thessaloniki, Greece. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/Ken_IAHR_03.zip
    14. Sheta, H., Helmig, R., & Hinkelmann, R. (2003). Dreidimensionale numerische Simulation von Methangasmigrationen im Untergrund. Oberhausener Grubengas-Tage 2003 “CMM Technologie” Erfahrungen Und Aussichten in Deutschland Und International, 20.03.2003 - 21.03.2003, Oberhausen, 44, Article 44. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/sheta_oberhausen_2003.pdf
    15. Gebauer, S., Neunhäuserer, L., Kornhuber, R., Ochs, S. O., Hinkelmann, R., & Helmig, R. (2002). Equidimensional Modelling of Flow and Transport Processes in Fractured Porous Systems I. In S. M. Hassanizadeh, R. J. Schotting, & W. G. & G. F. P. Gray (Eds.), 14. International Conference on Computational Methods in Water Resources, 23.06.2002 - 28.06.2002, Delft, The Netherlands (Vol. 1). Elsevier Science Publishers B.V. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/hinkelmann/delft01.ps
    16. Paul, M., Stauffer, F., Hinkelmann, R., & Helmig, R. (2000). Calibration of a Water-Gas Flow Model for Dike Systems. In L. R. Bentley & W. C. G. & G. F. P. J.F. Sykes, C.A. Brebbia (Eds.), 13. International Conference on Computational Methods in Water Resources, 25.06.2000 - 29.06.2000, Calgary, Canada (Vol. 1). A.A. Balkema Publishers. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/cmwr00.ps.gz
    17. Helmig, R., Jakobs, H., Bastian, P., & Reichenberger, V. (2000, December). Gas Water Flow and Transport Processes in Fractured Porous Media. BMWi - BmBF - Unterauftrag Zum Vorhaben 02 E 9027 8.
    18. Bastian, P., Chen, Z., Ewing, R. E., Helmig, R., Jakobs, H., & Reichenberger, V. (2000). Numerical Simulation of Multiphase Flow in Fractured Porous Media. In Z. Chen & Z.-C. Ewing, R.E. & Shi (Eds.), International Workshop “Numerical Treatment of Multiphase Flows in Porous Media”, 02.08.1999 - 06.08.1999, Beijing, China. Springer-Verlag.
    19. Breiting, T., Hinkelmann, R., Manthey, S., & Helmig, R. (2000, October). Methanausbreitung im Untergrund. Beitrag Zum Darmstädter Wasserbauliches Kolloquium 99, 14.10.1999 - 15.10.1999, Technische Universität Darmstadt. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/dawako.ps.gz
    20. Helmig, R., Hinkelmann, R., & Menzel, K. (1999, December). Numerische Methoden und Informationsverarbeitung am Beispiel der Hydrosystemmodellierung. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/hinkelmann/MitBI.ps.gz
    21. Emmert, M., Helmig, R., & Bächle, W. (1997). Numerical Modelling of Steam Injection in a Vertical Sand-Filled Column. In J. Holly & et al. M. Forrest (Eds.), 27. IAHR Congress: Water for a Changing Global Community, 10.08.1997 - 15.08.1997, San Francisco, USA. ASCE.
    22. Schäfer, G., Helmig, R., & Le Thiez, P. (1996, December). Vergleich numerischer Methoden zur Simulation von LNAPL-Infiltrationsvorgängen in porösen Medien. Tagungsband ASIM ’96.
    23. Helmig, R., Emmert, M., & Sheta, H. (1995). Modelling of Multiphase Flow Processes in Heterogeneous Porous Media and Applications. In P. J. & H. W. Pahl (Ed.), Computing in Civil and Building Engineering (Vol. 2). A.A. Balkema Publishers.
    24. Helmig, R., Kobus, H., & Braun, C. (1994). Simulation and Interpretation of Multiphase Processes in Porous and Fractured-Porous Media. In A. Peters & others (Eds.), Numerical Methods in Water Resources (Vol. 2). Kluver Academic Publisher.
    25. Zielke, W., Helmig, R., Kröhn, K. P., Shao, H., & Wollrath, J. (1991, December). Discrete Modelling of Transport Processes in Fractured Porous Rock. International Congress on Rock Mechanics.
  4. Research Reports

    1. Grüninger, C., Fetzer, T., Flemisch, B., & Helmig, R. (2017). Coupling DuMuX and DUNE-PDELab to investigate evaporation at the interface between Darcy and Navier-Stokes flow. In Archive of Numerical Software (No. 2017–1; Archive of Numerical Software, Issues 2017–1). https://doi.org/10.18419/opus-9360
    2. 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
    3. 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
    4. Helmig, R., Paul, M., Zimmer, S., Brückner-Nieder, U., Hoffmann, M., Schumacher, H., & Lemmer, U. (2007). Abschlussbericht zum Projekt SULKA “Qualitätskonzept für internationale Studiengänge an den Universitäten Stuttgart, Ulm und Karlsruhe” (Bericht 16/2007; Vol. LH217, Issue 16/2007).
    5. Kopp, A., Sheta, H., & Helmig, R. (2005). Parameterstudie zur Abschätzung erzielbarer Methangasmengen aus Gasproduktionsbohrungen mit Hilfe zweidimensionaler Strömungsmodellierung (Bericht 2005/10; Vol. LH207, Issue 2005/10).
    6. 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
    7. Neunhäuserer, L., Gebauer, S., Ochs, S. O., Hinkelmann, R., Kornhuber, R., & Helmig, R. (2004). Mehrgittermethoden und adaptive Euler-Lagrange-Verfahren zur Simulation von Strömungs- und Transportvorgängen in Kluftaquifersystemen [Bericht]. https://www.iws.uni-stuttgart.de/publikationen/hydrosys/paper/bericht_dfg_04.pdf
    8. Breiting, T., Sheta, H., Kobayashi, K., Hinkelmann, R., & Helmig, R. (2004). Assessment of hazardous gas emission to the surface over former mined areas (Bericht 2004/11; Vol. LH203, Issue 2004/11).
    9. Sheta, H., Breiting, T., Hinkelmann, R., & Helmig, R. (2004). Dreidimensionale Modellierung von Methanmigrationsprozessen im Untergrund (Bericht 2004/03; Vol. LH202, Issue 2004/03).
    10. Ochs, S. O., Hinkelmann, R., & Helmig, R. (2003). Numerische Simulation von Gaspumpversuchen im Untergrund [Bericht].
    11. Niessner, J., Roberts, J., & Helmig, R. (2003). Influence of an Interface Condition and Exact Linearization in the Newton Iterations for Two-Phase Flow in Heterogeneous Porous Media (Bericht RR-4903; Issue RR-4903). https://www.inria.fr/rrrt/rr-4903.html
    12. 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).
    13. Akuzun, S., Kobus, H., & Helmig, R. (2001). Parameteridentifikation für Doppelkontinuum-Modelle: Interpretation von Aquifertests in Karstaquiferen anhand synthetischer lokaler Kluftmmodelle (Bericht 2001/06; Vol. HG281, Issue 2001/06).
    14. Neunhäuserer, L., Hemminger, A., & Helmig, R. (1997). Festgestein-Aquiferanalog: Experimente und Modellierung, Teilprojekt 3: Einsatz von diskreten Modellansätzen (Bericht 1,He2531/1-1; Issues 1,He2531/1-1).
    15. Braun, C., Helmig, R., & Kobus, H. (1994). Untersuchung zur Grundwassergefährdung durch die Erweiterung der Kläranlage Tübingen (Bericht 1994/08; Vol. HG199, Issue 1994/08).

Talks

  1. R. Helmig, “Vom Gehirn zum Energiespeicher: Poröse Medien sind überall,” VHS Stuttgart: Fragen an die Wissenschaft, 13.11.2018, Stuttgart. Nov. 2018.
  2. R. Helmig, “Simulationen: die Welt besser verstehen? Strömung und Transport in porösen Medien,” Mintnight, Dietrich-Bonhoeffer-Gymnasium, 20.07.2018, Filderstadt. Jul. 2018.
  3. R. Helmig, “Grundwasser im Spannungsfeld konkurrierender Nutzungen des Untergrundes,” Ringvorlesung IZKT: Wasser: Lebensraum, Sehnsuchtsort, Ressource, 11.06.2018, Stuttgart. Jun. 2018.
  4. B. Becker, M. Schneider, H. Class, B. Flemisch, and R. Helmig, “Multi-physics models accounting for subsurface energy storage,” International Workshop on Geothermal Energy, 19.06.2018, Manchester, UK. Jun. 2018.
  5. B. Becker, M. Schneider, H. Class, B. Flemisch, and R. Helmig, “Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” IAHR-BW 2017: Water as a key factor for sustainable development goals, 01.12.2017, Stuttgart. Dec. 2017.
  6. B. Becker, M. Schneider, H. Class, B. Flemisch, and R. Helmig, “Model concepts for coupled geo-thermal flow and transport processes in subsurface systems,” 5th European Geothermal Workshop, 12.10.2017 - 13.10.2017, Karlsruhe. Oct. 2017.
  7. B. Becker, M. Schneider, B. Flemisch, M. Wolff, B. Faigle, and R. Helmig, “Multi-scale and multi-physics modelling: IMPESC formulation,” Seminar, IFP Énergies nouvelles, 16.05.2017, Rueil Malmaison. May 2017.
  8. T. Fetzer, K. Weishaupt, V. A. Jambhekar, E. Mejri, and R. Helmig, “Modelling and analysis of soil-moisture processes in the subsurface: the influence of evaporation and salt precipitation in groundwater,” NUPUS Day, 12.05.2017, Delft University of Technology, Delft, The Netherlands. May 2017.
  9. R. Helmig, “Energiespeicherung, Herausforderung der Zukunft - Was Simulationen beitragen,” Im digitalen Labor - Durch Computersimulationen die Welt verstehen. Wissenschaftsausstellung des Exzellenzclusters SimTech und des Sonderforschungsbereiches 716 der Universität Stuttgart, 09.05.2017 - 30.07.2017, Stuttgart. May 2017.
  10. R. Helmig, “Modeling and analysis of soil-moisture processes in the subsurface: the influence of evaporation and salt precipitation in groundwater,” World Water Day 2017 Colloquium, 22.03.2017, Hohenheim. Mar. 2017.
  11. R. Helmig, “Der Weg zum Wassernetzwerk Baden-Württemberg,” Auftaktveranstaltung des Netzwerks Wasserforschung Baden-Württemberg, 14.01.2016, Stuttgart. Jan. 2016.
  12. R. Helmig, “Flow and transport in porous media: from environmental via technical to biological applications,” 1st German National Chapter Meeting InterPore, 05.12.2016 - 06.12.2016, Leipzig. Dec. 2016.
  13. R. Helmig, “Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” GeoSim/SFB1114/NatRisk Annual Workshop 2016, 05.10.2016 - 07.10.2016, Potsdam. Oct. 2016.
  14. R. Helmig, “Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” Seminar, Graduiertenkolleg “Wasser - Menschen - Landwirtschaft”, 23.05.2016, Universität Hohenheim. May 2016.
  15. T. Fetzer, B. Flemisch, and R. Helmig, “Coupling free and porous-medium flow via an interface including surface roughness,” 8th International Conference on Porous Media & Annual Meeting- InterPore 2016, 09.05.2016 - 12.05.2016, Cincinnati, Ohio, USA. May 2016.
  16. R. Helmig and H. Class, “Kann Wasser den Berg hoch fließen?,” Kinderuni Weil der Stadt, 14.04.2016, Weil der Stadt. Apr. 2016.
  17. R. Helmig, “Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” Lions Club Herrenberg, 15.02.2016, Herrenberg. Feb. 2016.
  18. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” Vortragsreihe Grundwasser, Hochschule Heilbronn, 14.01.2015, Heilbronn. Jan. 2015.
  19. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Modeling and analysis of soil-moisture processes in the subsurface: the influence of evaporation and salt precipitation in groundwater,” Geoökologisches Kolloquium, TU Braunschweig, 22.01.2015, Braunschweig. Jan. 2015.
  20. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Modeling and analysis of soil-moisture processes in the subsurface: the influence of evaporation and salt precipitation in groundwater,” King Abdullah University of Science and Technology, 15.02.2015, Thuwal. Feb. 2015.
  21. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Modeling and analysis of soil-moisture processes in the subsurface: the influence of evaporation and salt precipitation in groundwater,” Seminar, Université de Rennes, 25.02.2015, Rennes, Frankreich. Feb. 2015.
  22. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” Seminar, Politecnico di Torino, 03.03.2015, Torino. Mar. 2015.
  23. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Modeling and analysis of soil-moisture processes in the subsurface: the influence of evaporation and salt precipitation in groundwater,” Seminar, Politecnico di Torino, 03.03.2015, Torino. Mar. 2015.
  24. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” 2015 NGWA Groundwater Summit, 16.03.2015 - 18.03.2015, San Antonio, USA. Mar. 2015.
  25. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Modeling and analysis of soil-moisture processes in the subsurface: the influence of evaporation and salt precipitation in groundwater,” Southwest Research Institute, 18.03.2015, San Antonio, USA. Mar. 2015.
  26. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Modeling and analysis of soil-moisture processes in the subsurface: the influence of evaporation and salt precipitation in groundwater,” Baylor University, 19.03.2015, Waco, USA. Mar. 2015.
  27. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” Los Alamos National Laboratory, 23.03.2015, Los Alamos, USA. Mar. 2015.
  28. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” University of North Carolina at Chapel Hill, 24.03.2015, Chapel Hill, North Carolina, USA. Mar. 2015.
  29. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” 2015 Clemson Hydrogeology Symposium, 26.03.2015, Clemson University, USA. Mar. 2015.
  30. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” Spring 2015 Geological Sciences Seminar, 30.03.2015, Gainesville, USA. Mar. 2015.
  31. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Modeling and analysis of soil-moisture processes in the subsurface: the influence of evaporation and salt precipitation in groundwater,” Seminar, Princeton University, 31.03.2015, Princeton, U.S.A. Mar. 2015.
  32. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” Seminar, Heriot Watt University, 10.04.2015, Edinburgh. Apr. 2015.
  33. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” Seminar, IFP Energies nouvelles, 16.04.2015, Rueil Malmaison. Apr. 2015.
  34. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Modeling and analysis of soil-moisture processes in the subsurface: the influence of evaporation and salt precipitation in groundwater,” Seminar, Université de Lausanne, 20.04.2015, Lausanne, Switzerland. Apr. 2015.
  35. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Modeling and analysis of soil-moisture processes in the subsurface: the influence of evaporation and salt precipitation in groundwater,” Eindhoven Multiscale Institute Colloquium, 22.04.2015, Eindhoven University of Technology. Apr. 2015.
  36. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Modeling and analysis of soil-moisture processes in the subsurface: the influence of evaporation and salt precipitation in groundwater,” Seminar, EAWAG, 07.05.2015, Dübendorf, Schweiz. May 2015.
  37. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” Seminar, Université de Neuchatel, 08.05.2015, Neuchatel. May 2015.
  38. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” University of Bergen, 11.05.2015, Bergen, Norway. May 2015.
  39. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” University of Illinois, 18.05.2015, Urbana-Champaign, USA. May 2015.
  40. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” University of Kansas, 20.05.2015, Lawrence, Kansas, USA. May 2015.
  41. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” University of British Columbia, 22.05.2015, Vancouver, Canada. May 2015.
  42. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” Portland State University, 26.05.2015, Portland, USA. May 2015.
  43. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” Oregon State University, 27.05.2015, Corvallis, USA. May 2015.
  44. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” University of California, 28.05.2015, Santa Barbara, California. May 2015.
  45. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” 2015 Modflow and More, 31.05.2015 - 03.06.2015, Golden, Colorado, USA. Jun. 2015.
  46. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” Montana State University, 04.06.2015, Bozeman, Montana, USA. Jun. 2015.
  47. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” Universität Göttingen, 17.06.2015, Göttingen. Jun. 2015.
  48. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Modeling and analysis of soil-moisture processes in the subsurface: the influence of evaporation and salt precipitation in groundwater,” Ohio Groundwater Forum, 24.06.2015, Westerville, Ohio, USA. Jun. 2015.
  49. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” IWR-Kolloquium, 01.07.2015, Heidelberg. Jul. 2015.
  50. R. Helmig and T. Fetzer, “Coupling two-phase compositional porous-medium and free flow,” Institutskolloquium Technische Thermodynamik, Deutsches Zentrum für Luft- und Raumfahrt, 14.07.2015, Stuttgart. Jul. 2015.
  51. R. Helmig, B. Becker, H. Class, B. Flemisch, and M. Schneider, “Konkurrierende Nutzung des Untergrunds diskutiert am Beispiel der Energiespeicherung: Ist Mathematik hier notwendig?,” Tag der Erlanger Mathematik 2015, 17.07.2015, Erlangen. Jul. 2015.
  52. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” International Association of Hydrologists, New South Wales, 10.08.2015, Sydney. Aug. 2015.
  53. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” International Association of Hydrologists, Canberra, 11.08.2015, Canberra. Aug. 2015.
  54. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” International Association of Hydrologists, Melbourne, 13.08.2015, Melbourne. Aug. 2015.
  55. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” International Association of Hydrologists, Tasmania, 17.08.2015, Hobart. Aug. 2015.
  56. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” NCGRT, Flinders University, Adelaide, 18.08.2015, Adelaide. Aug. 2015.
  57. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” International Association of Hydrologists, Western Australia, 19.08.2015, Perth. Aug. 2015.
  58. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” International Association of Hydrologists, Northern Territory, 20.08.2015, Darwin. Aug. 2015.
  59. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” International Association of Hydrologists, Queensland, 25.08.2015, Brisbane. Aug. 2015.
  60. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Modeling and analysis of soil-moisture processes in the subsurface: the influence of evaporation and salt precipitation in groundwater,” Opening Ceremony: DFG Research Training Group Urban Water Interfaces, TU Berlin, 08.09.2015, Berlin. Sep. 2015.
  61. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Modeling and analysis of soil-moisture processes in the subsurface: the influence of evaporation and salt precipitation in groundwater,” AQUA 2015 - 42nd IAH Congress, 13.09.2015 - 18.09.2015, Rom. Sep. 2015.
  62. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” Delft Advanced Reservoir Simulation Lunch & Learn, TU Delft, 25.09.2015, Delft, The Netherlands. Sep. 2015.
  63. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” Universitat Politècnica di València, 28.09.2015, Valencia. Sep. 2015.
  64. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” Geological Society of London, 05.10.2015, London, UK. Oct. 2015.
  65. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Modeling and analysis of soil-moisture processes in the subsurface: the influence of evaporation and salt precipitation in groundwater,” Journées MOMAS Multiphasiques 2015, 05.10.2015 - 07.10.2015, Nice, France. Oct. 2015.
  66. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” University of Vermont, 23.10.2015, Burlington, VT, USA. Oct. 2015.
  67. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” University of Western Ontario, 27.10.2015, London, ON, Canada. Oct. 2015.
  68. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” IAH-CNC 2015 Waterloo Conference, 27.10.2015 - 30.10.2015, Waterloo, Canada. Oct. 2015.
  69. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Modeling and analysis of soil-moisture processes in the subsurface: the influence of evaporation and salt precipitation in groundwater,” University of Waterloo, 29.10.2015, Waterloo, Canada. Oct. 2015.
  70. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” GSA 2015 Annual Meeting & Exposition, 01.11.2015 - 04.11.2015, Baltimore. Nov. 2015.
  71. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” Stanford University, 03.11.2015, Stanford, California, USA. Nov. 2015.
  72. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Modeling and analysis of soil-moisture processes in the subsurface: the influence of evaporation and salt precipitation in groundwater,” New Mexico Institute of Mining and Technology, 05.11.2015, Socorro, NM, USA. Nov. 2015.
  73. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” GeoEnviron-Seminar, Universität Tübingen, 13.11.2015, Tübingen. Nov. 2015.
  74. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” Universität Potsdam, 16.11.2015, Potsdam. Nov. 2015.
  75. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Modeling and analysis of soil-moisture processes in the subsurface: the influence of evaporation and salt precipitation in groundwater,” Universität Potsdam, 16.11.2015, Potsdam. Nov. 2015.
  76. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” Karlsruhe Institut für Technologie, 23.11.2015, Karlsruhe. Nov. 2015.
  77. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” Geological Survey of Ireland, 01.12.2015, Dublin. Dec. 2015.
  78. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Modeling and analysis of soil-moisture processes in the subsurface: the influence of evaporation and salt precipitation in groundwater,” Geological Survey of Ireland, 01.12.2015, Dublin. Dec. 2015.
  79. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Numerical models for evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” Distinguished Scientist Seminar Series, LBNL, 11.12.2015, Berkeley, USA. Dec. 2015.
  80. R. Helmig, “Evaluating the competitive use of the subsurface: the influence of energy storage and production in groundwater,” 2015 AGU Fall Meeting, 14.12.2015 - 18.12.2015, San Francisco, USA. Dec. 2015.
  81. R. Helmig, “Darcy Lecture Series in Groundwater Science 2015: Modeling and analysis of soil-moisture processes in the subsurface: the influence of evaporation and salt precipitation in groundwater,” 2015 NGWA Groundwater Expo and Annual Meeting, 14.12.2015 - 18.12.2015, Las Vegas, NV, USA. Dec. 2015.
  82. B. Becker, B. Flemisch, R. Helmig, and M. Schneider, “Roads to success in porous media research: A workshop for future research leaders in the UK,” Roads to success in porous media research: A workshop for future research leader, 11.12.2014 - 12.12.2014, Edinburgh. Dec. 2014.
  83. K. Mosthaf, T. Fetzer, B. Flemisch, and R. Helmig, “Modeling and analysis of the movement of fluid-fluid interfaces in porous media coupled with free flow,” International seminar: Dynamic processes in capillary fringes, 24.02.2014 - 25.02.2014, Karlsruhe. Feb. 2014.
  84. R. Helmig and H. Class, “Konkurrierende Nutzung des Untergrunds - Risiken und Chancen, erklärt am Beispiel der CO2-Speicherung,” Wissenschaftsforum Rathaus - Samstags-Uni, 25.01.2014, Stuttgart. Jan. 2014.
  85. R. Helmig, “Strömungs- und Transportvorgänge in porösen Medien - vom Grundwasser bis zur Brennstoffzelle,” Klassensitzung, math.-naturwiss. Klasse, Heidelberger Akademie d. Wissenschaften, 19.07.2013, Heidelberg. Jul. 2013.
  86. R. Helmig, B. Faigle, and P. Nuske, “Gas-water flow and transport processes in fractured porous systems,” Forschungsseminar AG Ingenieurgeologie, ETH Zürich, 12.03.2013, Zürich. Mar. 2013.
  87. R. Helmig, B. Faigle, B. Flemisch, and M. Wolff, “A decoupled model for compositional multiphase flow in porous media and multi-physics, multi-scale approaches for two-phase flow,” Shell Lecture Series, Rice University, Computational and Applied Mathematics, 18.02.2013, Houston, Texas, USA. Feb. 2013. [Online]. Available: https://www.sciencedirect.com/science/article/pii/S0045782514004630
  88. R. Helmig, K. Baber, K. Mosthaf, B. Flemisch, B. I. Wohlmuth, and T. Leijnse, “Modeling of compositional flow in coupled porous media-free flow domains,” CIW-Fakultätskolloquium, KIT, 08.01.2013, Karlsruhe. Jan. 2013.
  89. R. Helmig, K. Baber, B. Flemisch, and B. I. Wohlmuth, “Compositional multi-phase flow in coupled porous-media and free-flow domains,” Oberseminar Numerische Mathematik / Scientific Computing, FU Berlin, 22.10.2012, Berlin. Oct. 2012.
  90. R. Helmig, “Klimawandel und CO2 - kann CO2-Speicherung im Untergrund den Klimawandel abmildern?,” HIN-Kolloquium, Audi AG, 24.05.2012, Neckarsulm. May 2012.
  91. L. Walter, A. Kissinger, H. Class, S. Oladyshkin, and R. Helmig, “Methods for evaluating competitive use of the subsurface - for example, the influence of CCS in groundwater,” Exploratory Workshop: An integrated approach to water research and technology development, 03.05.2012 - 04.05.2012, TU München. May 2012.
  92. R. Helmig, “Modelling of complex porous media systems - from CO2 sequestration to evaporation at the soil-atmosphere interface,” Town Hall Meeting: Dynamic Earth - German Research Opportunities in Geosciences, 06.12.2011, San Francisco, USA. Dec. 2011.
  93. K. Mosthaf, K. Baber, B. Flemisch, R. Helmig, and B. I. Wohlmuth, “Coupling two-phase compositional porous-medium and free flow,” , 30.11.2011, Rice University, Houston, USA. Nov. 2011.
  94. R. Helmig, B. Faigle, B. Flemisch, and M. Wolff, “Efficient modeling of flow and transport in porous media using multiphysics and multiscale approaches,” Journées Scientifiques du GNR MoMaS, CIRM Marseille, 02.11.2011 - 04.11.2011, Marseille. Nov. 2011.
  95. R. Helmig, B. Faigle, B. Flemisch, and J. Fritz, “Efficient modelling of multi-phase flow and transport in porous media using multi-physics and multi-scale approaches,” MAC Summer Workshop 2011: Munich Multiphysics Meeting, 13.07.2011, TU München. Jul. 2011.
  96. R. Helmig, K. Baber, K. Mosthaf, B. Flemisch, B. I. Wohlmuth, and T. Leijnse, “Modeling of compositional flow in coupled porous-media - �free-flow domains,” GeoEnviron Seminar, Zentrum für Angewandte Geowissenschaften, 01.07.2011, Universität Tübingen. Jul. 2011.
  97. R. Helmig, B. Faigle, B. Flemisch, J. Fritz, and J. Niessner, “Efficient modelling of multi-phase flow and transport in porous media using multi-physics and multi-scale approaches,” MATCH Workshop on Analytical and Numerical Methods for Multiscale Systems, 14.02.2011 - 17.02.2011, Heidelberg. Feb. 2011.
  98. A. Ebigbo, H. Class, and R. Helmig, “Modelling of biofilm growth and its influence on CO2 and water (two-phase) flow in porous media,” SIAM Conference on Mathematical & Computational Issues in the Geosciences, 21.03.2011 - 24.03.2011, Long Beach, California, USA. Mar. 2011.
  99. Y. Cao, M. Espedal, R. Helmig, and B. I. Wohlmuth, “A new corrected operator splitting method combining streamline approach for two-phase flow with gravity,” SIAM Conference on Mathematical & Computational Issues in the Geosciences, 21.03.2011 - 24.03.2011, Long Beach, California, USA. Mar. 2011.
  100. R. Helmig, K. Baber, K. Mosthaf, B. Flemisch, B. I. Wohlmuth, and T. Leijnse, “Modeling of compositional flow in coupled porous-media - �free-flow domains,” Seminar am Fraunhofer Institut für Techno- und Wirtschaftsmathematik, Kaiserslautern, 28.01.2011, Kaiserslautern. Jan. 2011.

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