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Old   May 3, 2006, 06:57
Default Faf Field Boundary Condition
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Sarah
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Does anyone know how I should apply the far field boundary condition to my CFD code? Any advice or reference would be appreciated.

Regards, Sarah
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Old   May 3, 2006, 14:16
Default Re: Faf Field Boundary Condition
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nitin
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your far field condition will depends on flows condition ( subsonic or supersonic)?

Are you using any commercial software or developing your own?

nitin
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Old   May 3, 2006, 15:26
Default Re: Faf Field Boundary Condition
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aghiba
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Dear for all, Anyone can send me these documentations to my box e-mail: bekna2006@yahoo.fr 1)Prediction of laminar and turbulent flows past single and twin airfoils (Ph.D. Thesis) OBASIH, KEMAKOLAMM 2)Numerical calculations for flows past an unconventional airfoil (Ph.D. Thesis) TSAI, P I N G-H O thank you in advance
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Old   May 3, 2006, 21:42
Default Re: Faf Field Boundary Condition
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Sarah
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Thanks.

I am developing my own code based on finite volume method, and the flow is high subsonic - and compressible.

Actually, it is an airfoil-like shape, if I define the far field like U=Uinf, V=0, T=Tinf, P=Pinf, then I need to define a very large domain which needs a large number of grid points, and it is impossible, practically. So, I need to make the domiain smaller, but I have to know what sort of corrections I should make.

Please give me some advice, even if it might be slightly helpful.

Appreciate it.

Sarah

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Old   May 4, 2006, 05:09
Default Re: Faf Field Boundary Condition
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Praveen. C
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For subsonic flow you can use the point vortex correction. Please see the paper

Far-field boundary conditions for transonic lifting solutions to the Euler equations

THOMAS, J. L.;SALAS, M. D. (NASA, Langley Research Center, Hampton, VA) AIAA Journal 1986 0001-1452 vol.24 no.7 (1074-1080)

It is also explained in the book of Blazek. http://www.cfd-online.com/Books/show...hp?book_id=263
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Old   May 5, 2006, 01:04
Default Re: Faf Field Boundary Condition
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RW
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There is a range of methods that you can use for your far-field boundary conditions. A good review of these methods can be found in

Modeling Artificial Boundary Conditions for Compressible Flow, Colonius, T, Annu. Rev. Fluid Mech. 36: 315-345, 2004

Hope it helps.
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