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Could you help me about how to use the waveTransmissive BC for sound wave?

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Old   July 13, 2012, 02:59
Default Could you help me about how to use the waveTransmissive BC for sound wave?
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I want to compute the case that sound propagats in the fluid with background flow. The compute domain is assumed to be a square one and the problem is 2D. The background field are denoted as p0, U0 and rho0.
I don't know how to apply the boundary for the sound pressure p and the paticle velocity U. Will the waveTransmissive BC work? and how to apply it? I cann't quite understand the information on openfoamwiki. (Now I just test the case that a gaussian pulse propagates and no reflect at the boundary).

Thanks a lot.
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