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Transmission Loss Assessment for a Muffler by Boundary Element Method Approach

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Author(s): Ovidiu Vasile

Journal: Analele Universităţii Eftimie Murgu Reşiţa. Fascicula de Inginerie
ISSN 1453-7397

Volume: XVII;
Issue: 1;
Start page: 233;
Date: 2010;
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Keywords: muffler | transmission loss | BEM

ABSTRACT
This paper investigates the acoustic performance of two cases for reac-tive mufflers using Boundary Element Method (BEM) analysis. Modeling procedures for accurate performance prediction had led to the devel-opment of new methods for practical muffler components in design. The transmission loss (TL) is the more widely can be easily computed with a BEM analysis. The author presents an overview of the principles and theoretical formulation of BEM for predicting the transmission loss of a muffler, the pressure and velocity distribution on surfaces of muf-fler. At the end of the paper is presented a comparison of two cases of mufflers for transmission loss. The predicted results agreed in some limits with the experimental data published in literature.
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