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Acoustic dispersion relationship of a metamaterial with losses
Posted 15 janv. 2017, 12:20 UTC−5 Acoustics & Vibrations Version 5.2a 1 Reply
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Hello,
I'm trying to derive acoustic dispersion relationship considering losses in the unit cell.
I manage to do it in the lossless case solving for the eigenvalue problem with a Floquet-Bloch periodicity condition and a parametric study on the bloch wavenumber in one direction only.
Is there a specific module or procedure to achieve this considering losses in the air ?
I hope the problem is clearly stated and people will have a solution.
Thanks
I'm trying to derive acoustic dispersion relationship considering losses in the unit cell.
I manage to do it in the lossless case solving for the eigenvalue problem with a Floquet-Bloch periodicity condition and a parametric study on the bloch wavenumber in one direction only.
Is there a specific module or procedure to achieve this considering losses in the air ?
I hope the problem is clearly stated and people will have a solution.
Thanks
1 Reply Last Post 19 janv. 2017, 03:51 UTC−5
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Posted:
8 years ago
Hi Alexandre
In this model we include thermal and viscous losses:
www.comsol.com/model/sonic-crystal-16925
Best regards
Mads
In this model we include thermal and viscous losses:
www.comsol.com/model/sonic-crystal-16925
Best regards
Mads