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Acoustic transmission through various media

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Hi, I am trying to model acoustic transmission from a source in air, through a solid and into a liquid. There is a sample 2-D model posted online (Acoustic Transmission Loss through Periodic Elastic Structures found at www.comsol.com/showroom/gallery/1974/) that models acoustic transmission loss through a solid (with air on either side) and I was using that as my starting point, though I am trying to model in 3-D. In that sample model, 3 physics are employed: 1 pressure acoustics physics for the air domain containing the source (solving for only the scattered wave), 1 solid mechanics physics for the solid and another pressure acoustics for the air domain on the other side of the solid (solving for the total wave). Do I need to employ 3 physics for this using the acoustics module in v 4.0? Or can I simply use the Acoustic-Structure Interaction physics?? I have additional questions about boundary conditions, but I think I should make sure I have this part correct before even worrying about anything further.

Thank you for any insight you can provide me, I greatly appreciate it!

0 Replies Last Post 2010/07/09 0:23 GMT-4
COMSOL Moderator

Hello Hillary Vargas

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