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Nonisothermal multicomponent reactive transport model for unsaturated soil

Seetharam, Suresh Channarayapatna, Thomas, Hywel Rhys ORCID: and Vardon, Philip James 2011. Nonisothermal multicomponent reactive transport model for unsaturated soil. International Journal of Geomechanics 11 (2) , pp. 84-90. 10.1061/(ASCE)GM.1943-5622.0000018

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A multicomponent reactive transport model, coupled with an existing thermal, hydraulic, and mechanical model for porous media, is investigated. The model is based on conservation of mass/energy principles for the flow and stress-strain equilibrium for the mechanical behavior. The resultant model is coupled with a geochemical model to capture geochemical interactions. Numerically, the Galerkin FEM is employed for spatial discretization and an implicit Euler method for temporal discretization. The coupling of the transport and geochemical models is achieved through both noniterative and iterative approaches. A series of applications are considered to demonstrate the numerical performance and qualitative behavior, specifically in the context of multicomponent behavior. The model shows good convergence and computational efficiency.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Advanced Research Computing @ Cardiff (ARCCA)
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Uncontrolled Keywords: models ; computer analysis ; transport phenomena ; geotechnical models ; coupling ; unsaturated flow ; unsaturated soils ; chemicals
Additional Information: Pdf uploaded in accordance with publisher's policy at (accessed 25/02/2014)
Publisher: American Society of Civil Engineers
ISSN: 1532-3641
Date of First Compliant Deposit: 30 March 2016
Last Modified: 15 May 2023 17:55

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