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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.
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https://hal.archives-ouvertes.fr/hal-00357646
Contributor : Christophe Corre <>
Submitted on : Friday, January 30, 2009 - 11:42:23 PM
Last modification on : Wednesday, July 8, 2020 - 4:54:36 PM

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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, Wiley, 2008, 58 (5), pp.493-526. ⟨hal-00357646⟩

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