The one-dimensional (1-D) time-domain approach and the three-dimensional finite element method (FEM) are used to predict and analyze the acoustic attenuation performance of three-pass perforated tube mufflers with and without end-resonator. For the given muffler configurations, the transmission loss results obtained from the 1-D time-domain approach agree reasonably well with the FEM predictions within the plane wave region, while the 1-D results derive the FEM predictions at higher frequencies. The FEM is then used to investigate the effects of internal structure on the acoustic attenuation performance of the mufflers, while the 1-D time-domain approach is employed to examine the influence of high temperature gas flow on the acoustic attenuation performance of the mufflers within the plane wave region.
Acoustic Attenuation Performance Analysis of Three-pass Perforated Tube Muffler with End-resonator
Sae International Journal of Passenger Cars. Mechanical Systems
Sae Int. J. Passeng. Cars – Mech. Syst
SAE World Congress & Exhibition ; 2008
Sae International Journal of Passenger Cars - Mechanical Systems ; 1 , 1 ; 783-791
2008-04-14
9 pages
Conference paper
English
Acoustic attenuation performance analysis of three-pass perforated tube muffler with end-resonator
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