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-   -   reflcetive BC at free end of 3D tube(tunnel) (https://www.cfd-online.com/Forums/main/5751-reflcetive-bc-free-end-3d-tube-tunnel.html)

kei-tee February 17, 2003 11:36
reflcetive BC at free end of 3D tube(tunnel)
 
Hi everyone! I'd like to know appropriate reflective(on compression or expansion wave) B.C. at free end of tube model. Is pressure fix (to static pressure) at free end best chice?

kei-tee February 18, 2003 11:36
Re: reflcetive BC at free end of 3D tube(tunnel)
 
more detail description:

Solver: 3D compressible Euler eq. (FDM, Roe FDS) tube is lie horizontal in the air. Both end is open.

Now,I adopt following BC, P at both end is set to static pressure.

Is this BC is apropriate? I'm not sure.

Give me a suggestion please.


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