Nonisothermal Multicomponent Reactive Transport Model for Unsaturated Soil
Publication: International Journal of Geomechanics
Volume 11, Issue 2
Abstract
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.
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Acknowledgments
The writers would like to kindly acknowledge Dr. Peter Cleall for his contribution during early stages of this work.
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Information
Published In
International Journal of Geomechanics
Volume 11 • Issue 2 • April 2011
Pages: 84 - 89
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Jul 1, 2009
Accepted: Apr 5, 2010
Published online: Apr 10, 2010
Published in print: Apr 1, 2011
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