[overture] Re: Compressible flow over 2-d airfoil
- From: Bill Henshaw <henshaw@xxxxxxxx>
- To: overture@xxxxxxxxxxxxx
- Date: Fri, 17 Jul 2009 20:55:37 -0700
Dear Praveen,
Unfortunately there are no characteristic boundary conditions
implemented (We have never really used cgcns very much for external
aerodynamic flows). If you enclose your airfoil in a big rectangle
(or multiple rectangles) then you may be able to use the existing
BC's
Regards,
Bill
Praveen C wrote:
Thanks. I now understand this a little better and able to do some
computations. Are there any characteristic-based boundary conditions
available in cgcns ? What type of BC would I use for compressible flow
for a curved outer (farfield) boundary. I may not know the direction of
the velocity there since the boundary is curved.
Thanks
praveen
praveen
On Wed, Jul 15, 2009 at 9:05 AM, Bill Henshaw <henshaw@xxxxxxxx
<mailto:henshaw@xxxxxxxx>> wrote:
Dear Praveen,
Sorry, that error message is not very good. Try using
backGround(1,0)=subSonicOutflow mixedDerivative(1.*t+1.*t.n=300.)
as in cg/cns/cmd/cicSubSonic.cmd
Regards,
Bill
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