Numerical dissipation of upwind schemes in low Mach flow

被引：47
|
作者：
Thornber, B. J. R. [1 ]
Drikakis, D. [1 ]
机构：
[1] Cranfield Univ, Fluid Mech & Computat Sci Grp, Aerosp Sci Dept, Cranfield MK43 0AL, Beds, England
来源：
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS | 2008年 / 56卷 / 08期
关键词：
Godunov; upwind; multicomponent; low Mach; Roe;
D O I：
10.1002/fld.1628
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
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 (c) 2007 John Wiley & Sons, Ltd.
引用
收藏
页码：1535 / 1541
页数：7
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