Print Email Facebook Twitter A locally conservative mixed finite element framework for coupled hydro-mechanical–chemical processes in heterogeneous porous media Title A locally conservative mixed finite element framework for coupled hydro-mechanical–chemical processes in heterogeneous porous media Author Kadeethum, T. (Technical University of Denmark; Cornell University College of Engineering) Lee, S. (Florida State University) Ballarin, F. (SISSA; Catholic University of the Sacred Heart) Choo, J. (The University of Hong Kong) Nick, H.M. (TU Delft Reservoir Engineering; Technical University of Denmark) Date 2021 Abstract This paper presents a mixed finite element framework for coupled hydro-mechanical–chemical processes in heterogeneous porous media. The framework combines two types of locally conservative discretization schemes: (1) an enriched Galerkin method for reactive flow, and (2) a three-field mixed finite element method for coupled fluid flow and solid deformation. This combination ensures local mass conservation, which is critical to flow and transport in heterogeneous porous media, with a relatively affordable computational cost. A particular class of the framework is constructed for calcite precipitation/dissolution reactions, incorporating their nonlinear effects on the fluid viscosity and solid deformation. Linearization schemes and algorithms for solving the nonlinear algebraic system are also presented. Through numerical examples of various complexity, we demonstrate that the proposed framework is a robust and efficient computational method for simulation of reactive flow and transport in deformable porous media, even when the material properties are strongly heterogeneous and anisotropic. Subject Enriched Galerkin methodHydro-mechanical–chemical couplingLocal conservationMixed finite element methodPoroelasticityReactive flow To reference this document use: http://resolver.tudelft.nl/uuid:e5ad191c-906e-4a07-800d-11ca94b346ab DOI https://doi.org/10.1016/j.cageo.2021.104774 ISSN 0098-3004 Source Computers & Geosciences: an international journal, 152, 1-16 Part of collection Institutional Repository Document type journal article Rights © 2021 T. Kadeethum, S. Lee, F. Ballarin, J. Choo, H.M. Nick Files PDF 1_s2.0_S0098300421000790_main.pdf 4.26 MB Close viewer /islandora/object/uuid:e5ad191c-906e-4a07-800d-11ca94b346ab/datastream/OBJ/view