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Coupling compositional gas liquid Darcy and free gas flows at porous and free flow domains interface

Roland Masson 1 L Trenty 2 Yumeng Zhang 1
1 COFFEE - COmplex Flows For Energy and Environment
CRISAM - Inria Sophia Antipolis - Méditerranée , JAD - Laboratoire Jean Alexandre Dieudonné : UMR7351
Abstract : This paper proposes an efficient splitting algorithm to solve coupled liquid gas Darcy and free gas flows at the interface between a porous medium and a free-flow domain. This model is compared to the reduced model introduced in \cite{BMTZ-fvca7} using a 1D approximation of the gas free flow. For that purpose, the gas molar fraction diffusive flux at the interface in the free-flow domain is approximated by a two point flux approximation based on a low frequency diagonal approximation of a Steklov-Poincar\'e type operator. The splitting algorithm and the reduced model are applied in particular to the modelling of the mass exchanges at the interface between the storage and the ventilation galleries in radioactive waste deposits.
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Submitted on : Saturday, June 11, 2016 - 7:45:47 PM
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Roland Masson, L Trenty, Yumeng Zhang. Coupling compositional gas liquid Darcy and free gas flows at porous and free flow domains interface. Journal of Computational Physics, Elsevier, 2016, ⟨10.1016/j.jcp.2016.06.003⟩. ⟨hal-01238530v2⟩

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