Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Directionally dependent acoustic impedance boundary conditons

Please login with a confirmed email address before reporting spam

I am using the transient acoustics module, and I have two adjacent domains. Domain 1 contains an acoustic source that creates a sound wave which propagates into Domain 2. In Domain 2, the wave reflects off a surface and travels back into Domain 1. Is it possible to assign a Boundary Condition (BC) between Domain 1 and Domain 2, so that the acoustic wave leaving Domain 1 and entering Domain 2 encounters a different impedance BC than the reflected acoustic wave which is leaving Domain 2 and entering Domain 1?

I have already tried assigning an identity pair, but that does not work. You can only assing one Impedance value for the boundary condtion of an identity pair, it's the same as having an interior impedance BC.

1 Reply Last Post 2011年3月10日 GMT-5 07:17
Tom Alexander Solgård

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 2011年3月10日 GMT-5 07:17

Interesting question. I would also like to know a way to do this....
--
MSc. Acoustics using COMSOL for modelling loudspeakers and room acoustics.
no.linkedin.com/pub/tom-alexander-solg%C3%A5rd/27/600/1b3
Interesting question. I would also like to know a way to do this.... -- MSc. Acoustics using COMSOL for modelling loudspeakers and room acoustics. http://no.linkedin.com/pub/tom-alexander-solg%C3%A5rd/27/600/1b3

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.