| Version 6 (modified by , 11 years ago) ( diff ) |
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Below are density plots.
Shock tube problem with origin sit in rarefaction wave. Roe scheme Riemann solver without entropy fix gives unphysical result. (Discontinuity should not happen in rarefaction wave)
When entropy fix subroutine is included, the result is OK.
Roe scheme can not be used to solve Euler equations in low density regime. It may result in negative density.
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- roe_fixed1rho.png (9.7 KB ) - added by 11 years ago.
- roe1rho.png (9.7 KB ) - added by 11 years ago.
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