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A fully-coupled finite element code for modeling thermo-hydro-mechanical processes in porous geological media
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering (moved 20130630).
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering (moved 20130630).
2009 (English)In: 43rd U.S. Rock Mechanics Symposium and 4th U.S.-Canada Rock Mechanics Symposium, American Rock Mechanics Association (ARMA), 2009Conference paper, Published paper (Refereed)
Abstract [en]

This paper describes a new FEM code for modeling coupled thermo-hydro-mechanical processes in porous geological media. For three-dimensional problems, six governing equations, which are based on the conservation equations of momentum, mass, and energy, are presented to describe the coupled THM processes. The three displacement components, the temperature, the pore fluid pressure and the porosity are chosen as the six primary variables. The governing continuum equations are discretized in space by using the Galerkin finite element formulation, and are discretized in time by one-dimensional finite difference scheme. This leads to a large non-symmetric matrix equation that has many small entries along its diagonal, and is therefore ill-conditioned. For efficient equation solution, some special numerical techniques are used in the code in order to deal with the problem of a large non-symmetric ill-conditioned matrix equation. The code was validated against several classical analytical solutions to problems in poroelasticity and thermoelasticity, and tested against a benchmark laboratory experiment that was performed in the Polytechnic University of Catalonia (UPC), Spain.

Place, publisher, year, edition, pages
American Rock Mechanics Association (ARMA), 2009.
National Category
Geophysics
Identifiers
URN: urn:nbn:se:kth:diva-153517Scopus ID: 2-s2.0-70450212234ISBN: 9781615674312 (print)OAI: oai:DiVA.org:kth-153517DiVA: diva2:755032
Conference
43rd U.S. Rock Mechanics Symposium and 4th U.S.-Canada Rock Mechanics Symposium, 28 June 2009 through 1 July 2009, Asheville, NC, United States
Note

QC 20141013

Available from: 2014-10-13 Created: 2014-10-06 Last updated: 2014-10-13Bibliographically approved

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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
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  • Other locale
More languages
Output format
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  • asciidoc
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