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IMA J Numer Anal 28, 3 (2008) 469-495
Discretization of the coupled heat and electrical diffusion problems by the finite element and the finite volume methods
Abdallah Bradji 1, Raphaele Herbin 2
(2008)

The modelling of the heat diffusion coupled with electrical diffusion yields a nonlinear system of elliptic equations. The ohmic losses which appear as a source term in the heat diffusion equation is a nonlinear term which lies in $L^1$. A finite element scheme and a finite volume scheme are considered for the discretization of the system; in both cases, we show that the approximate solution obtained with the scheme converges, up to a subsequence, to a solution of the coupled elliptic system.
1 :  Weierstrass Institute for Applied Analysis and Stochastics (WIAS)
Forschungsverbund Berlin e.V. (FVB)
2 :  Laboratoire d'Analyse, Topologie, Probabilités (LATP)
CNRS : UMR6632 – Université de Provence - Aix-Marseille I – Université Paul Cézanne - Aix-Marseille III
Mathématiques/Analyse numérique
Nonlinear elliptic system – Diffusion equation – Finite element scheme – Finite volume scheme – $L^1$-data – Ohmic losses
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