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Acoustic Simulation of Mufflers with Multiple Perforated Tubes
HE Yan-song;LI Jing;LU Hui-chao
2012, 32 (2):
151-154.
DOI: 10.3969/j.issn.1006-1355-2012.02.037
Based on acoustic FEM, the transmission losses of three mufflers with different combinations of perforated tubes were computed. The influences of the perforation porosities of the tubes on the transmission losses of the mufflers were discussed. Then, the acoustic performance of a complicated muffler with multiple perforated tubes was stimulated. The result shows that the transmission loss of the muffler is low when the noise frequency is below 1 000 Hz. This work provides a reference for further improvement of the muffler.
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