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Old   October 20, 2009, 04:03
Default Compressible flow model
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I would like to simulate the duct(internal flow) with inlet mach number 2. What type of boundary conditions at inlet i need to give?
It is givng the warning that velocity boundary conditions should not give at inlet for compressible flow. Please give a solutions for this problem.

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Old   October 20, 2009, 06:30
Default Compressible Flow
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Not sure what code you are using but you likely need to apply a mass flow rate, something that will remain constant throughout the model, velocity is too vague for compressible flows.
I would have thought you would need some sort of temperature too?
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