Behaviour of Numerical Schemes -- CFD Online Discussion Forums

September 7, 2001, 10:52	Behaviour of Numerical Schemes	#1
Ravi. B. R Guest Posts: n/a	Dear Sir, I have a question regarding the behaviour of numerical schemes, in particular Roe's scheme for evaluating Inviscid fluxes. I have a NS-code which works for supersonic and hypersonic flows with implicit time marching (euler). I have noticed that though for High Mach numbers the residue oscillates and I have to reduce the courant number, though implicit schemes are unconditionaly stable and that it should converge for any courant/CFD number. I would like this point to be clarified. thanks, ravi.

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