Compressible Flow over Airfoil. Boundary Conditions
 

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

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.

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