Acoustic attenuation prediction of splitter silencers by using a combined BEM and point collocation approach

Liang Yang; Zhenlin Ji; T. W. Wu

Acoustic attenuation prediction of splitter silencers by using a combined BEM and point collocation approach

Liang Yang, Zhenlin Ji, T. W. Wu

Mechanical and Aerospace Engineering

Research output: Contribution to conference › Paper › peer-review

Abstract

A combined technique is presented to evaluate the acoustic attenuation performance of splitter silencers. A large silencer can be divided into several substructures for analysis purposes. The boundary element method (BEM) and the numerical point collocation approach (NPCA) are employed respectively to calculate the impedance matrices of the substructures. Due to the existence of higher-order modes at the inlet and outlet, the resultant impedance matrix of the whole silencer is converted into the scattering matrix for transmission loss (TL) calculation. The combined technique is verified by comparing to existing numerical and experimental results.

Original language	English
State	Published - 2015
Event	44th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2015 - San Francisco, United States Duration: Aug 9 2015 → Aug 12 2015

Conference

Conference	44th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2015
Country/Territory	United States
City	San Francisco
Period	8/9/15 → 8/12/15

Bibliographical note

Publisher Copyright:
© 2015 by ASME.

ASJC Scopus subject areas

Acoustics and Ultrasonics

Cite this

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title = "Acoustic attenuation prediction of splitter silencers by using a combined BEM and point collocation approach",

abstract = "A combined technique is presented to evaluate the acoustic attenuation performance of splitter silencers. A large silencer can be divided into several substructures for analysis purposes. The boundary element method (BEM) and the numerical point collocation approach (NPCA) are employed respectively to calculate the impedance matrices of the substructures. Due to the existence of higher-order modes at the inlet and outlet, the resultant impedance matrix of the whole silencer is converted into the scattering matrix for transmission loss (TL) calculation. The combined technique is verified by comparing to existing numerical and experimental results.",

author = "Liang Yang and Zhenlin Ji and Wu, {T. W.}",

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T1 - Acoustic attenuation prediction of splitter silencers by using a combined BEM and point collocation approach

AU - Yang, Liang

AU - Ji, Zhenlin

AU - Wu, T. W.

PY - 2015

Y1 - 2015

N2 - A combined technique is presented to evaluate the acoustic attenuation performance of splitter silencers. A large silencer can be divided into several substructures for analysis purposes. The boundary element method (BEM) and the numerical point collocation approach (NPCA) are employed respectively to calculate the impedance matrices of the substructures. Due to the existence of higher-order modes at the inlet and outlet, the resultant impedance matrix of the whole silencer is converted into the scattering matrix for transmission loss (TL) calculation. The combined technique is verified by comparing to existing numerical and experimental results.

AB - A combined technique is presented to evaluate the acoustic attenuation performance of splitter silencers. A large silencer can be divided into several substructures for analysis purposes. The boundary element method (BEM) and the numerical point collocation approach (NPCA) are employed respectively to calculate the impedance matrices of the substructures. Due to the existence of higher-order modes at the inlet and outlet, the resultant impedance matrix of the whole silencer is converted into the scattering matrix for transmission loss (TL) calculation. The combined technique is verified by comparing to existing numerical and experimental results.

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M3 - Paper

AN - SCOPUS:84947575511

T2 - 44th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2015

Y2 - 9 August 2015 through 12 August 2015

ER -

Acoustic attenuation prediction of splitter silencers by using a combined BEM and point collocation approach

Abstract

Conference

Bibliographical note

ASJC Scopus subject areas

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Cite this