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Numerical dissipation of upwind schemes in low Mach flow

✍ Scribed by B. J. R. Thornber; D. Drikakis

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
89 KB
Volume
56
Category
Article
ISSN
0271-2091

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✦ Synopsis

Abstract

This paper presents a modified Roe scheme for the simulation of multicomponent compressible flows with low Mach features. This modification reduces the excess dissipation of kinetic energy in Godunov‐type methods at low Mach. The modification is shown to work effectively to Ma=0.0002 using a single‐mode Kelvin–Helmholtz instability as a test case, and reproduces the correct Ma^2^ incompressible pressure scaling. Computational expense is negligible. Copyright Β© 2007 John Wiley & Sons, Ltd.

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