Change search
CiteExportLink to record
Permanent link

Direct link
Cite
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
Numerical model for fully coupled THM processes with multiphase flow and code validation
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: Chinese Journal of Rock Mechanics and Engineering, ISSN 1000-6915, Vol. 28, no 4, 649-665 p.Article in journal (Refereed) Published
Abstract [en]

A numerical model for fully coupled THM processes with multiphase flow in porous media was developed based on the momentum, mass and energy conservation laws of the continuum mechanics and the averaging approach of the mixture theory over a solid-liquid-gas three-phase system. To characterize multiphase THM coupling and to make the governing equations closed, complete and compatible, six processes and their coupling effects were considered, including stress-strain, water flow, gas flow, vapor flow, heat transport and porosity evolution processes. The physical phenomena such as phase transition, gas solubility in liquid, thermo-osmosis, moisture transfer and moisture swelling were modeled. As a result, the relative humidity of pore gas was defined on a sounder physical basis, avoiding the traditional definition as a negative exponential function of suction and absolute temperature. By selecting displacements, pore water pressure, pore gas pressure, pore vapor pressure, temperature and porosity as basic unknown variables, a finite element formulation was then established, and a three-dimensional computer code, THYME3D, was developed, with each node of 8 degrees of freedom. The bentonite THM Mock-up experiments performed by CEA were employed to validate the mathematical model and the software. The main coupling mechanisms involved in the experiments were satisfactorily simulated in the validation, and the effects of the governing equations, the constitutive relations and the parameters on the coupled THM processes were understood. The work developed enabled further in-depth research on fully coupled THM or THMC processes in porous media.

Place, publisher, year, edition, pages
2009. Vol. 28, no 4, 649-665 p.
Keyword [en]
Code validation, Moisture swelling, Multiphase flow transfer, Numerical simulation, Porous medium, Relative humidity, Rock mechanics, THM coupling
National Category
Geotechnical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-153617Scopus ID: 2-s2.0-65449170115OAI: oai:DiVA.org:kth-153617DiVA: diva2:752806
Note

QC 20141006

Available from: 2014-10-06 Created: 2014-10-06 Last updated: 2017-12-05Bibliographically approved

Open Access in DiVA

No full text

Scopus

Search in DiVA

By author/editor
Tong, FuguoJing, Lanru
By organisation
Land and Water Resources Engineering (moved 20130630)
In the same journal
Chinese Journal of Rock Mechanics and Engineering
Geotechnical Engineering

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 51 hits
CiteExportLink to record
Permanent link

Direct link
Cite
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