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Journal Articles International Journal for Numerical Methods in Fluids Year : 2008

Low-cost implicit schemes for all-speed flows on unstructured meshes

Abstract

Matrix-free implicit treatments are now commonly used for computing compressible flow problems: a reduced cost per iteration and low-memory requirements are their most attractive features. This paper explains how it is possible to preserve these features for all-speed flows, in spite of the use of a low-Mach preconditioning matrix. The proposed approach exploits a particular property of a widely used low-Mach preconditioner proposed by Turkel. Its efficiency is demonstrated on some steady and unsteady applications.

Dates and versions

hal-00357646 , version 1 (30-01-2009)

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Thibaud Kloczko, Christophe Eric Corre, Alberto Beccantini. Low-cost implicit schemes for all-speed flows on unstructured meshes. International Journal for Numerical Methods in Fluids, 2008, 58 (5), pp.493-526. ⟨10.1002/fld.1730⟩. ⟨hal-00357646⟩
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