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Compressible Flow over Airfoil. Boundary Conditions

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Old   December 9, 2010, 12:36
Default Compressible Flow over Airfoil. Boundary Conditions
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Hello,

I would like to know which are the proper boundary conditions when solving the subsonic compressible flow over an airfoil. From my experience I know that in Fluent there is an special bc: FarField which is valid for both upstream and downstream far field. In OpenFoam I haven't found it and I am using freeStream, but I don't get the right solution. The solver that I am using is rhoSimpleFoam.

I am surprised that there is a little OpenFoam information about airfoils in subsonic compressible flow, there is a tutorial about the incompressible flow over an airfoil but nothing about compressible... anybody has an example of the resolution of such problem?

Thanks

Last edited by jose21; December 9, 2010 at 14:33.
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Old   December 11, 2010, 12:04
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Hi,

You may try zeroGradient at the outlet and places where you want a "far-field" condition.

You can also try specifying a fixed value of pressure at outlet for subsonic flow.
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Old   November 3, 2013, 06:58
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hi jose21
I have a question similar to your question.
Did you find appropriate boundary conditions?
mach number: 0.5
and Re: 30*10^6
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