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Modeling external supersonic flow

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Old   September 30, 2008, 04:18
Default Modeling external supersonic flow
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Hi Everybody, I'm an almost new Fluent user. I'm trying to model an external air flow on a Martian lander. I haven't any trouble for Mach<1, using k-epsilon turbulence model, but for Mach>1.5 it's still quite good for first order convergence, then it's deverge as I upgrade to second order scheme. Does somebody have any advice?
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