Calculation of the three-dimensional sound pressure field around bodies with macro porosities

Bin Wang (1) , Denis Duhamel (1)

1 navier umr 8205 - Laboratoire Navier

This paper proposes a multi-domain boundary element method to compute the sound field around bodies with macro porosities. It saves computational cost and is especially suitable for complex structures. It is based on the boundary element method, and divides the computation into an exterior subdomain and several interior subdomains. The subdomains are connected by transfer matrices. This method is applied to study some simple examples for which analytical or BEM results are available. Good agreements between these known solutions and the results of multi-domain BEM can check the accuracy. Then a complicated network with flange is calculated with multi-domain BEM to show the influence of network on sound pressure field.

Domaines: Matériaux et structures en mécanique [physics.class-ph]; Electrons fortement corrélés [cond-mat.str-el]; Physique Atomique [physics.atom-ph]

Bin Wang, Denis Duhamel. Calculation of the three-dimensional sound pressure field around bodies with macro porosities. The 21st International Congress on Sound and Vibration, Jul 2014, Beijing, China. ⟨hal-01118273⟩