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On Environmental Acoustics and Noise Mapping Numerical Study of Sound Absorption by Perforated Panels
| Content Provider | Semantic Scholar |
|---|---|
| Author | Carbajo, Jesús San Román Godinho, Luis F. Mendes, Paulo Amado Ramis, Jaime |
| Copyright Year | 2013 |
| Abstract | Perforated panels are acoustic absorbers typically spaced from a hard surface that attenuate sound due to viscous friction in their holes. An accurate acoustic model of a perforated panel should include viscothermal effects to account for the losses associated with the narrow perforations. In this paper, a numerical finite element model of a perforated panel including these loss mechanisms was implemented. For this purpose, the linearized Navier-Stokes model included in the commercial package COMSOL Multiphysics is used. Simulations allow predicting sound absorption of these types of elements. Results obtained are compared to wellestablished analytical models. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.sea-acustica.es/fileadmin/publicaciones/AEV-1_006.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |