Comparison of Numerical Tools Through Thermo-Hydro-Gas Transport Modeling for a Geological Repository in Boom Clay

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Abstract

Two numerical codes, TOUGH2 with and CODE_BRIGHT, were compared in a confidence building effort for multiphase flow problems in a geological repository in Boom Clay, Belgium. A model study comparison between two codes was carried out through three numerical examples based on the current Belgian multibarrier repository design for geological disposal of high-level waste, including a one-dimensional hydro-gas (HG) case, a two-dimensional (2-D) axisymmetrical HG case with a constant hydrogen production rate, and a 2-D axisymmetrical thermo-hydro-gas (THG) case with time-varying heat and gas production rate. Comparison between numerical results demonstrates that the two numerical tools give sufficiently similar results in all three cases, thus providing evidence for the consistency of these tools in solving HG and THG problems in Boom Clay.

Details

Original languageEnglish
Pages (from-to)411-423
JournalNuclear Technology
Volume174
Issue number3
StatePublished - Jun 2011
Event2009 TOUGH2 Symposium - Berkeley, CA, United States

Keywords

  • multiphase flow, thermo-hydro-gas coupling, deep clay formation

ID: 133609