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 Ma2 incompressible pressure scaling. Computational expense is negligible.
|Number of pages||7|
|Journal||International Journal for Numerical Methods in Fluids|
|Publication status||Published - 11 Oct 2007|
- Godunov methods
- low Mach features
- Roe scheme