Dan, this is a trick for simulating a 3D boundary layer
bypass in a 2D CFD. You might want to rerun some of Perry's
stuff with this trick.

Paul Lamar

Dan Ruggirello wrote:

Paul,
I don't mind trying this, but I think an equally good way is to set the edge
where the flow would go into the out of plane direction above the inlet as a
neutral boundary condition (same boundary condition as the far right edge of
the model).  This way, it doesn't influence the flow above the airfoil.  I
tried this method on perry2.

Dan

OK. I did not understand that. BTW that pulsation you mentioned
with the animation was experienced in the early P51 ducts before
they installed the boundary layer bleed.
 
Paul Lamar
 
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