Chen, X and Hicks, MA (2013) Unsaturated hydro-mechanical-chemo coupled constitutive model with consideration of osmotic flow. Computers and Geotechnics, 54. pp. 94-103. ISSN 0266-352X
Abstract
Since low permeability rock has the potential to behave as an actual semi-permeable osmotic membrane, chemical osmosis may have an effect on water flow and needs to be accounted for in analysis. Hence, an advanced fully coupled formulation for modelling unsaturated hydro, chemical and mechanical effects is here presented based on modified mixture theory. Firstly, the classical Darcy's law has been modified to include the chemical potential. Secondly, the mechanical deformation, which affects the permeability, has been coupled with the water and chemical flows by using Helmholtz free energy and the Gibbs-Duhem equation. Finally, an illustrative numerical example with relevance to radioactive waste disposal has been analysed to investigate the performance of the coupled formulation and the relative influence of parameters.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Keywords: | Biot’s theory; Modified mixture theory; Non-equilibrium thermodynamics; Osmotic flow; Unsaturated |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) > Institute for Resilient Infrastructure (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 14 Jul 2016 15:43 |
Last Modified: | 04 Nov 2016 00:55 |
Published Version: | http://doi.org/10.1016/j.compgeo.2013.06.001 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.compgeo.2013.06.001 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:93338 |