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Pressure Acoustics (acpr) Boundary Velocity condition
Posted 3 mars 2016, 12:59 UTC−5 Acoustics & Vibrations, Computational Fluid Dynamics (CFD), Modeling Tools & Definitions, Parameters, Variables, & Functions Version 5.1 2 Replies
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I am trying to set a boundary in motion with velocity, but the only boundary physics in this module I can find is normal acceleration, which does not give me correct results.
I have also tried the acoustic-thermoacoustic physics set but this also produced wrong results for me.
Does anybody know how I can simply assign a velocity to a boundary in the pressure acoustics physics?
thanks
Chris
Hello Chris
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You have to download the COMSOL version 5.2 or 5.2a in order to find that feature.
Best regards.
Somto
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As mentioned by another user, the velocity boundary condition exists in version 5.2 and version 5.2a. In 5.1 it is very easy to set up manually. Say your velocity is 1[m/s]. Use a normal acceleration condition and write: acpr.iomega*1[m/s].
See for example the generic_711_coupler tutorial model.
Best regards
Mads