2016
DOI: 10.1155/2016/6797593
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An Investigation of Acoustic Attenuation Performance of Silencers with Mean Flow Based on Three-Dimensional Numerical Simulation

Abstract: Transmission loss (TL) is often used to evaluate the acoustic attenuation performance of a silencer. In this work, a three-dimensional (3D) finite element method (FEM) is employed to calculate the TL of some representative silencers, namely, circular expansion chamber silencer and straight-through perforated pipe silencer. In order to account for the effect of mean flow that exists inside the silencer, the 3D FEM is used in conjunction with the Computational Fluid Dynamics (CFD) simulation of the flow field. M… Show more

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Cited by 13 publications
(6 citation statements)
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References 26 publications
(41 reference statements)
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“…In previous studies [22][23][24], most of the research studies on the transmission loss characteristics of mufflers used simulation and experimental methods (references are cited here). Some phenomena can be found, but the internal mechanism is difficult to reveal accurately.…”
Section: Influence Of the Outlet Position On The Transmission Loss Of The Mufflermentioning
confidence: 99%
“…In previous studies [22][23][24], most of the research studies on the transmission loss characteristics of mufflers used simulation and experimental methods (references are cited here). Some phenomena can be found, but the internal mechanism is difficult to reveal accurately.…”
Section: Influence Of the Outlet Position On The Transmission Loss Of The Mufflermentioning
confidence: 99%
“…Patne et al studied in [16] the TL of a reactive muffler using COMSOL software, employing FEM. Fan and Guo [17] investigated the TL of a silencer using 3D-FEM coupled with CFD. Puthuparampil, in his master's thesis [18], studied the acoustic optimization of mufflers using single-objective and multi-objective optimization based on TMM and FEM.…”
Section: Introductionmentioning
confidence: 99%
“…In recent years, experimental and FEM studies have been used to develop efficient muffler acoustic models especially for the application of absorptive materials in noise level reduction. 1720 For example, Munt 21 performed a transfer matrix modeling of a cylindrical exhaust muffler consisting of membrane and hard porous media to study sound propagation at low frequencies (between 63 and 500 Hz). Lee 22 investigated the acoustic performance of the exhaust at frequencies below 3000 Hz using FEM.…”
Section: Introductionmentioning
confidence: 99%