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how to simulate supersonic flow

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Old   May 24, 2006, 05:38
Default how to simulate supersonic flow
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Josh
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hi all, i'm a new user of Fluent. now i try to simulate 2-D supersonic wind tunnel (theoritically the velocity will start from subsonic, then accelerate to supersonic, then become subsonic again with occurence of normal/oblique shock) using inviscid model. i'm using pressure inlet, pressure outlet, and wall boundry conditions. the problem is that the solution is always divegence if i use coupled implicit. if i use coupled explicit, the residuals will osilate and never become converge. so what must i do now?
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Old   May 24, 2006, 05:51
Default Re: how to simulate supersonic flow
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Cyril
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Try with pressure far field for your inlet and oulet boundary conditions.
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Old   May 26, 2006, 04:38
Default Re: how to simulate supersonic flow
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Josh
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hi cyril, i've used the pressure far field boundary condition, but the solutions never become converge. so what should i do?
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Old   May 26, 2006, 10:42
Default Re: how to simulate supersonic flow
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sadoun
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Air flow through the engine intake valve(GDI) What is the best B.C to the model
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