TY  - JOUR
JF  - International Journal of Engineering Science
PB  - Elsevier Ltd
TI  - Mathematical model of coupled dual chemical osmosis based on mixture-coupling theory
SN  - 00207225
VL  - 129
SP  - 145
EP  - 155
Y1  - 2018///
N1  - cited By 13
N2  - Very low permeability soils and rocks can act as a semi-permeable osmotic membrane, which will generate osmotic flow. Such complexities have been extensively studied, but dual chemical osmosis, the influence of sorption on chemical osmotic flow and the consequent influence on the stress/stain change remains unclear. This study extends mixture-coupling theory, by including chemical sorption entropy and chemical potential, and provides a new-coupled formulation for chemical transport in very low permeability rock. The classical Darcy's Law and Fick's Law have been modified to include the influence of chemical potential and sorption under relevant conditions, and dual chemical osmosis. The mechanical deformation has been coupled with the water and chemical flows using Helmholtz free energy. Finally, a coupled unsaturated hydro-mechanical-chemical model which considers dual chemical osmosis and sorption is presented. This mathematical model provides the possibility of using dual chemicals to control osmotic flow and chemical transport, which leads to important engineering applications such as those in the field of nuclear waste disposal. © 2018 Elsevier Ltd
A1  - Chen, X.
A1  - Thornton, S.F.
A1  - Pao, W.
AV  - none
KW  - Chemical potential; Flow of fluids; Free energy; Groundwater; Mixtures; Osmosis; Porous materials; Sorption; Waste disposal
KW  -  Chemical osmosis; Chemical sorption; Chemical transport; Coupled formulation; Coupling theory; Engineering applications; Mechanical deformation; Very low permeability
KW  -  Indicators (chemical)
ID  - scholars10104
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85046763610&doi=10.1016%2fj.ijengsci.2018.04.010&partnerID=40&md5=920926a0cbadfdaa3a2acc9feb556510
ER  -