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reflcetive BC at free end of 3D tube(tunnel)

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Old   February 17, 2003, 12:36
Default reflcetive BC at free end of 3D tube(tunnel)
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kei-tee
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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?
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Old   February 18, 2003, 12:36
Default Re: reflcetive BC at free end of 3D tube(tunnel)
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kei-tee
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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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