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TOUGH3-FLAC3D: A MODELING APPROACH FOR PARALLEL COMPUTING OF FLUID FLOW AND GEOMECHANICS
  • +5
  • Antonio Pio Rinaldi,
  • Jonny Rutqvist,
  • Keurfon Luu,
  • Laura Blanco-Martín,
  • Mengsu Hu,
  • Manuel L Sentís,
  • Leandra Eberle,
  • Philipp Kaestli
Antonio Pio Rinaldi
Swiss Seismological Service, Swiss Federal Institute of Technology, ETHZ, Zurich, Switzerland, Swiss Seismological Service, Swiss Federal Institute of Technology, ETHZ, Zurich, Switzerland, Swiss Seismological Service, Swiss Federal Institute of Technology, ETHZ, Zurich, Switzerland

Corresponding Author:antoniopio.rinaldi@sed.ethz.ch

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Jonny Rutqvist
Energy Geosciences Division, LBNL, Berkeley, CA, USA, Energy Geosciences Division, LBNL, Berkeley, CA, USA, Energy Geosciences Division, LBNL, Berkeley, CA, USA
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Keurfon Luu
Energy Geosciences Division, LBNL, Berkeley, CA, USA, Energy Geosciences Division, LBNL, Berkeley, CA, USA, Energy Geosciences Division, LBNL, Berkeley, CA, USA
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Laura Blanco-Martín
Energy Geosciences Division, LBNL, Berkeley, CA, USA, Energy Geosciences Division, LBNL, Berkeley, CA, USA, Energy Geosciences Division, LBNL, Berkeley, CA, USA
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Mengsu Hu
Energy Geosciences Division, LBNL, Berkeley, CA, USA, Energy Geosciences Division, LBNL, Berkeley, CA, USA, Energy Geosciences Division, LBNL, Berkeley, CA, USA
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Manuel L Sentís
Swiss Federal Nuclear Safety Inspectorate (ENSI), Brugg, Switzerland, Swiss Federal Nuclear Safety Inspectorate (ENSI), Brugg, Switzerland, Swiss Federal Nuclear Safety Inspectorate (ENSI), Brugg, Switzerland
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Leandra Eberle
Swiss Seismological Service, ETH, Zurich, Swiss Seismological Service, ETH, Zurich
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Philipp Kaestli
Swiss Seismological Service, ETH, Zurich, Swiss Seismological Service, ETH, Zurich
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Abstract

The recent development of the TOUGH3 code allows for a faster and more reliable fluid flow simulator. At the same time, new versions of FLAC3D are released periodically, allowing for new features and faster execution. In this paper, we present the first implementation of the coupling between TOUGH3 and FLAC3Dv6/7, maintaining parallel computing capabilities for the coupled fluid flow and geomechanical codes. We compare the newly developed version with analytical solutions and with the previous approach, and provide some performance analysis on different meshes and varying the number of running processors. Finally, we present two case studies related to fault reactivation during CO2 sequestration and nuclear waste disposal. The use of parallel computing allows for meshes with a larger number of elements, and hence more detailed understanding of thermo-hydro-mechanical processes occurring at depth.