Transmission Loss Assessment for a Muffler by Boundary Element Method Approach

• Main Author: Ovidiu Vasile
• Format: Article
• Language: English
• Published: Eftimie Murgu University of Resita 2010-01-01
• Series: Analele Universităţii "Eftimie Murgu" Reşiţa: Fascicola I, Inginerie
• Subjects: muffler; transmission loss; BEM
• Online Access: http://anale-ing.uem.ro/2010/26_C.pdf

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.