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Acoustic Attenuation Performance Analysis of Three-pass Perforated Tube Muffler with End-resonator
ISSN: 1946-3995, e-ISSN: 1946-4002
Published April 14, 2008 by SAE International in United States
Citation: Ji, Z., Su, S., and Liu, C., "Acoustic Attenuation Performance Analysis of Three-pass Perforated Tube Muffler with End-resonator," SAE Int. J. Passeng. Cars - Mech. Syst. 1(1):783-791, 2009, https://doi.org/10.4271/2008-01-0894.
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.