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Modeling multiphase flow, deformation and heat transfer in buffer
KTH.
KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering.
2009 (English)In: ISRM International Symposium on Rock Mechanics, SINOROCK 2009, International Society for Rock Mechanics , 2009Conference paper, Published paper (Refereed)
Abstract [en]

This paper presents a new FEM approach and computer code for modeling fully coupled thermo-hydro-mechanical processes associated with underground nuclear waste repositories. The governing equations are based on the theory of mixtures applied to the multiphysics of porous media, considering solid-phase deformation, liquid-phase flow, gas flow, heat transport, thermally-induced water flow, phase change of water, and swelling deformation in buffer materials. For three-dimensional problems, three displacement components, water pressure, gas pressure, vapor pressure and porosity are chosen as the eight primary variables. The code was tested against a benchmark test that was performed in laboratory conditions on vertical cylindrical columns of compacted MX-80 bentonite by the French Commission of Atomic Energy from 2003 to 2004. The comparison with the benchmark tests shows good agreement between the numerical predictions and the measured data, thus providing a partial validation of our new code. Discussion of outstanding issues and conclusions are presented at the end of the paper. © ISRM International Symposium on Rock Mechanics, SINOROCK 2009.

Place, publisher, year, edition, pages
International Society for Rock Mechanics , 2009.
Keywords [en]
Benchmarking, Codes (symbols), Deformation, Flow of gases, Flow of water, Geological repositories, Heat transfer, Porous materials, Rock mechanics, Swelling, Displacement components, Laboratory conditions, Nuclear waste repositories, Numerical predictions, Solid phase deformation, Swelling deformation, Thermo-hydro-mechanical process, Three-dimensional problems, Phase change materials
National Category
Geophysical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-246977Scopus ID: 2-s2.0-85055036945OAI: oai:DiVA.org:kth-246977DiVA, id: diva2:1297665
Conference
ISRM International Symposium on Rock Mechanics 2009, SINOROCK 2009, 19 May 2009 through 22 May 2009
Note

QC 20190320

Available from: 2019-03-20 Created: 2019-03-20 Last updated: 2019-03-20Bibliographically approved

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Tong, FuguoJing, Lanru

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf