A boundary element analysis for simple expansion silencers with mean flow
Journal
Journal of the Chinese Institute of Engineers, Transactions of the Chinese Institute of Engineers,Series A/Chung-kuo Kung Ch'eng Hsuch K'an
Journal Volume
23
Journal Issue
4
Pages
529-536
Date Issued
2000
Author(s)
Abstract
Abstract A numerical scheme for obtaining the acoustic performance of silencers with mean flow is developed in this study. The differential governing equation for sound propagation in a medium with uniform velocity is derived first and then is converted to a Helmholtz equation by Prandtl‐Glauert transformation. Therefore, the numerical implementation for an integral Helmholtz equation can be applied directly. The numerical results for simple expansion silencers with different mean flow velocities are computed and also compared with other research. The agreement is good. In addition, the silencers with intruding tubes are also analyzed and compared with the experimental measurements. Key words: soundsilencerboundary element method
SDGs
Type
journal article