Analytical modeling of dissipative silencers

Venegas, R ORCID: https://orcid.org/0000-0001-7726-8388, Arenas, JP and Boutin, C 2018, 'Analytical modeling of dissipative silencers' , The Journal of the Acoustical Society of America, 144 (5) , pp. 2998-3009.

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Abstract

This paper applies ideas originally developed in the field of acoustics of multiscale porous media to the analytical modeling of dissipative silencers. Analytical models for the long-wavelength acoustical properties of different types of dissipative silencers, such as pod silencers, lined ducts, splitters, and bar silencers, are introduced in this work. Some of these models account for the possibility of using different porous materials in a given silencer. For instance, a model for a splitter silencer comprising baffles made of different porous materials is derived. Examples of the sound transmission behavior of the said types of silencers are presented to evidence that the dissipation of sound energy is largely influenced by pressure diffusion occurring in the porous constituents. The predictions of the analytical models are in good agreement with finite element calculations.

Item Type:	Article
Schools:	Schools > School of Computing, Science and Engineering > Salford Innovation Research Centre
Journal or Publication Title:	The Journal of the Acoustical Society of America
Publisher:	Acoustical Society of America
ISSN:	0001-4966
Related URLs:	Publisher
Depositing User:	RGV Venegas
Date Deposited:	14 Mar 2019 10:09
Last Modified:	06 May 2020 08:01
URI:	http://usir.salford.ac.uk/id/eprint/50344

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