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-   -   Vanishing of the dissipation term in Roe's scheme for a stationary shear wave (http://www.cfd-online.com/Forums/main/82005-vanishing-dissipation-term-roes-scheme-stationary-shear-wave.html)

arjun shanker November 12, 2010 23:31

Vanishing of the dissipation term in Roe's scheme for a stationary shear wave
 
Hello All,

I have another doubt In Van Leers paper (AIAA 87-1104) comparing several different algorithms, he points out that the dissipation matrix of Roe's scheme vanishes when a single steady flow such as a shock, contact or a shear surface is aligned with the interface. How to prove that the dissipation term 1/2|Bbar(Qr,Ql)|deltaQ vanishes for a stationary shear (vorticity) whose wave front is parallel to the grid interface?
Kindly help me as to how prove it? This is also from one of my assignments. :confused::( !!


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