TY - JOUR T1 - Numerical Modeling and Simulation of Fully Coupled Processes of Reactive Multiphase Flow in Porous Media AU - Ahusborde , Etienne AU - Amaziane , Brahim AU - El Ossmani , Mustapha AU - Id Moulay , Mohamed JO - Journal of Mathematical Study VL - 4 SP - 359 EP - 377 PY - 2019 DA - 2019/12 SN - 52 DO - http://doi.org/10.4208/jms.v52n4.19.01 UR - https://global-sci.org/intro/article_detail/jms/13462.html KW - Multiphase multicomponent flow, reactive transport, porous media, fully coupled, fully implicit, finite volume, nonlinear degenerate system, coupled PDE and ODE, permeability-porosity changes. AB -

In this paper, we consider a finite volume approach for modelling multiphase flow coupled to geochemistry in porous media. Reactive multiphase flows are modelled by a highly nonlinear system of degenerate partial differential equations coupled with algebraic and ordinary differential equations. We propose a fully implicit scheme using a direct substitution approach (DSA) implemented in the framework of the parallel open-source platform DuMuX. We focus on the particular case where porosity changes due to mineral dissolution/precipitation are taken into account. This alteration of the porosity can have significant effects on the permeability and the tortuosity. The accuracy and effectiveness of the implementation of permeability/porosity and tortuosity/porosity relationships related to mineral dissolution/precipitation for single-phase and two-phase flows are demonstrated through numerical simulations.