A cartesian grid finite volume method for the solution of the Poisson equation with variable coefficients and embedded interfaces:

Abstract: "We present a finite volume method for the solution of the two-dimensional Poisson equation [inverted triangle]. ([Beta](x) [inverted triangle] u(x)) = f(x) with variable, discontinuous coefficients and solution discontinuities on irregular domains. The method uses bilinear ansatz fun...

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Bibliographische Detailangaben
Hauptverfasser: Oevermann, Michael 1967- (VerfasserIn), Klein, Rupert (VerfasserIn)
Format: Buch
Sprache:English
Veröffentlicht: Berlin Konrad-Zuse-Zentrum für Informationstechnik 2006
Schriftenreihe:ZIB-Report 2006,05
Schlagworte:
Zusammenfassung:Abstract: "We present a finite volume method for the solution of the two-dimensional Poisson equation [inverted triangle]. ([Beta](x) [inverted triangle] u(x)) = f(x) with variable, discontinuous coefficients and solution discontinuities on irregular domains. The method uses bilinear ansatz functions on Cartesian grids for the solution u(x) resulting in a compact nine-point stencil. The resulting linear problem has been solved with a standard multigrid solver. Singularities associated with vanishing partial volumes of intersected grid cells or the dual bilinear ansatz itself are removed by a two-step asymptotic approach. The method achieves second order of accuracy in the L[superscript infinity] and L² norm."
Beschreibung:26 S. Ill., graph. Darst.

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