Mehdizadeh, Omid Z. and Paraschivoiu, Marius (2005) A threedimensional finite element approach for predicting the transmission loss in mufflers and silencers with no mean flow. Applied Acoustics, 66 (8). pp. 902918. ISSN 0003682X

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Abstract
A threedimensional finite element method has been implemented to predict the transmission loss of a packed muffler and a parallel baffle silencer for a given frequency range. Isoparametric quadratic tetrahedral elements have been chosen due to their flexibility and accuracy in modeling geometries with curved surfaces. For accurate physical representation, perforated plates are modeled with complex acoustic impedance while absorption linings are modeled as a bulk media with a complex speed of sound and mean density. Domain decomposition and parallel processing techniques are applied to address the high computational and memory requirements. The comparison of the computationally predicted and the experimentally measured transmission loss shows a good agreement.
Divisions:  Concordia University > Gina Cody School of Engineering and Computer Science > Mechanical and Industrial Engineering 

Item Type:  Article 
Refereed:  Yes 
Authors:  Mehdizadeh, Omid Z. and Paraschivoiu, Marius 
Journal or Publication:  Applied Acoustics 
Date:  August 2005 
Digital Object Identifier (DOI):  10.1016/j.apacoust.2004.11.008 
Keywords:  Finite element method; Helmoltz equation; Tetrahedron elements 
ID Code:  6752 
Deposited By:  ANDREA MURRAY 
Deposited On:  02 Jul 2010 16:48 
Last Modified:  18 Jan 2018 17:29 
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