Un résultat d'existence de solution faible d'un système parabolique-elliptique non linéaire doublement dégénéré
Mortar finite element discretization of a model coupling Darcy and Stokes equations
As a first draft of a model for a river flowing on a homogeneous porous ground, we consider a system where the Darcy and Stokes equations are coupled appropriate matching conditions on the interface. We propose a discretization of this problem which combines the mortar method with standard finite elements, in order to handle separately the flow inside and outside the porous medium. We prove and error estimates for the resulting discrete problem. Some numerical experiments confirm the interest...
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