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Rapport (Rapport De Recherche) Année : 1996

Mesh-Centered Finite Differences from Nodal Finite Elements

Résumé

After it is shown that the classical five points mesh-centered finite difference scheme can be derived from a low order nodal finite element scheme by using nonstandard quadrature formulae, higher order block mesh-centered finite difference schemes for second-order elliptic problems are derived from higher order nodal finite elements with nonstandard quadrature formulae as before, combined to a procedure known as «transverse integration». Numerical experiments with uniform and nonuniform meshes and different types of boundary conditions confirm the theoretical predictions, in discrete as well as continuous norms.

Domaines

Autre [cs.OH]
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Dates et versions

inria-00073719 , version 1 (24-05-2006)

Identifiants

  • HAL Id : inria-00073719 , version 1

Citer

Jean-Pierre Hennart, Edmundo del Valle. Mesh-Centered Finite Differences from Nodal Finite Elements. [Research Report] RR-2979, INRIA. 1996. ⟨inria-00073719⟩
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