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Anechoic and Reverberant Chamber

Posted Jan 14, 2022, 8:25 a.m. EST 1 Reply

Giada Cardellino
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Hello, somebody knows how to model in comsol an anechoic and reverberant chamber with a plate vibrating inside to evaluate the pressure level inside both the chambers? Thank you in advance!

1 Reply Last Post Jan 14, 2022, 12:20 p.m. EST
Dave Greve
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Posted: 3 years ago Jan 14, 2022, 12:20 p.m. EST

To achieve minimal reflections you can either use the impedance boundary condition (with impedance set to the acoustic impedance of your medium) or (better) use a perfectly matched layer.

To have reverberations set the impedance boundary condition to something other than the medium impedance. Or use the hard wall boundary condition.

To achieve minimal reflections you can either use the impedance boundary condition (with impedance set to the acoustic impedance of your medium) or (better) use a perfectly matched layer. To have reverberations set the impedance boundary condition to something other than the medium impedance. Or use the hard wall boundary condition.

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