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Mathematics of Computation
Mathematics of Computation
ISSN 1088-6842(online) ISSN 0025-5718(print)

 

Finite volume schemes for the biharmonic problem on general meshes


Authors: R. Eymard, T. Gallouët, R. Herbin and A. Linke
Journal: Math. Comp. 81 (2012), 2019-2048
MSC (2010): Primary 65N08
Published electronically: April 16, 2012
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Abstract: During the development of a convergence theory for Nicolaides' extension of the classical MAC scheme for the incompressible Navier-Stokes equations to unstructured triangle meshes, it became clear that a convergence theory for a new kind of finite volume discretizations for the biharmonic problem would be a very useful tool in the convergence analysis of the generalized MAC scheme. Therefore, we present and analyze new finite volume schemes for the approximation of a biharmonic problem with Dirichlet boundary conditions on grids which satisfy an orthogonality condition. We prove that a piecewise constant approximate solution of the biharmonic problem converges in $ L^2(\Omega )$ to the exact solution. Similar results are shown for the discrete approximate of the gradient and the discrete approximate of the Laplacian of the exact solution. Error estimates are also derived. This part of the paper is a first, significant step towards a convergence theory of Nicolaides' extension of the classical MAC scheme. Further, we show that finite volume discretizations for the biharmonic problem can also be defined on very general, nonconforming meshes, such that the same convergence results hold. The possibility to construct a converging lowest order finite volume method for the $ H^2$-regular biharmonic problem on general meshes seems to be an interesting result for itself and clarifies the necessary ingredients for converging discretizations of the biharmonic problem. All these results are confirmed by numerical results.


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Additional Information

R. Eymard
Affiliation: Université Paris-Est Marne-la-Valleé, Laboratoire d′Analyse et Mathématiques Appliquées, 5 boulevard Descartes, F-77454 Marne la Vallée Cedex 2
Email: robert.eymard@univ-mlv.fr

T. Gallouët
Affiliation: Université Aix-Marseille, Laboratoire d′Analyse, Topologie et Probabilités, 39 rue Joliot-Curie, F-13453 Marseille cedex France
Email: thierry.gallouet@latp.univ-mrs.fr

R. Herbin
Affiliation: Université Aix-Marseille, Laboratoire d′Analyse, Topologie et Probabilités, 39 rue Joliot-Curie, F-13453 Marseille cedex France
Email: raphaele.herbin@latp.univ-mrs.fr

A. Linke
Affiliation: Weierstrass Institute, Mohrenstrasse 39, D-10117 Berlin, Germany
Email: alexander.linke@wias-berlin.de

DOI: http://dx.doi.org/10.1090/S0025-5718-2012-02608-1
PII: S 0025-5718(2012)02608-1
Keywords: Biharmonic problem, finite volume scheme, convergence analysis, error estimate
Received by editor(s): April 16, 2010
Received by editor(s) in revised form: April 22, 2011
Published electronically: April 16, 2012
Article copyright: © Copyright 2012 American Mathematical Society