Coupling of a two phase gas liquid compositional 3D Darcy flow with a 1D compositional free gas flow

Abstract : A model coupling a three dimensional gas liquid compositional Darcy flow and a one dimensional compositional free gas flow is presented. The coupling conditions at the interface between the gallery and the porous media account for the molar normal fluxes continuity for each component, the gas liquid thermodynami-cal equilibrium, the gas pressure continuity and the gas and liquid molar fractions continuity. This model is applied to the simulation of the mass exchanges at the interface between the repository and the ventilation excavated gallery in a nuclear waste geological repository. The convergence of the Vertex Approximate Gradient discretization is analysed for a simplified model coupling the Richards approximation in the porous media and the gas pressure equation in the gallery.
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Konstantin Brenner, Roland Masson, L Trenty, Yumeng Zhang. Coupling of a two phase gas liquid compositional 3D Darcy flow with a 1D compositional free gas flow. The International Symposium of Finite Volumes for Complex Applications VII, Jun 2014, Berlin, Germany. ⟨10.1007/978-3-319-05591-6_51⟩. ⟨hal-01320500⟩

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