BEM analysis of large three-port silencers with FEM-AML validation

P. Wang; K. Ruan; T. W. Wu; D. W. Herrin

BEM analysis of large three-port silencers with FEM-AML validation

P. Wang, K. Ruan, T. W. Wu, D. W. Herrin

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

1 Scopus citations

Abstract

Three-port silencers are frequently used in industry to merge two inlets into one common outlet stream or one inlet into two outlets. The current approaches to analyze the three-port silencers, including the BEM impedance matrix and the superposition method, are limited to small inlet and small outlet cross sections where the plane-wave assumption is still valid. In this paper, the recently developed BEM impedance-toscattering matrix method for large silencer analysis is extended to large three-port silencers so that the higherorder propagating modes at the inlets and outlets can be considered in the transmission loss (TL) calculation. The BEM TL solution is validated by an equivalent IL solution using the Automatically Matched Layer (AML) in the FEM for the one-inlet/two-outlet configuration.

Original language	English
State	Published - 2017
Event	46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, INTER-NOISE 2017 - Hong Kong, China Duration: Aug 27 2017 → Aug 30 2017

Conference

Conference	46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, INTER-NOISE 2017
Country/Territory	China
City	Hong Kong
Period	8/27/17 → 8/30/17

Bibliographical note

Publisher Copyright:
© 2017 Institute of Noise Control Engineering. All rights reserved.

Keywords

BEM
FEM-AML
Large three-port silencer
Scattering matrix
Transmission loss

ASJC Scopus subject areas

Acoustics and Ultrasonics

Cite this

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title = "BEM analysis of large three-port silencers with FEM-AML validation",

abstract = "Three-port silencers are frequently used in industry to merge two inlets into one common outlet stream or one inlet into two outlets. The current approaches to analyze the three-port silencers, including the BEM impedance matrix and the superposition method, are limited to small inlet and small outlet cross sections where the plane-wave assumption is still valid. In this paper, the recently developed BEM impedance-toscattering matrix method for large silencer analysis is extended to large three-port silencers so that the higherorder propagating modes at the inlets and outlets can be considered in the transmission loss (TL) calculation. The BEM TL solution is validated by an equivalent IL solution using the Automatically Matched Layer (AML) in the FEM for the one-inlet/two-outlet configuration.",

keywords = "BEM, FEM-AML, Large three-port silencer, Scattering matrix, Transmission loss",

author = "P. Wang and K. Ruan and Wu, {T. W.} and Herrin, {D. W.}",

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T1 - BEM analysis of large three-port silencers with FEM-AML validation

AU - Wang, P.

AU - Ruan, K.

AU - Wu, T. W.

AU - Herrin, D. W.

PY - 2017

Y1 - 2017

N2 - Three-port silencers are frequently used in industry to merge two inlets into one common outlet stream or one inlet into two outlets. The current approaches to analyze the three-port silencers, including the BEM impedance matrix and the superposition method, are limited to small inlet and small outlet cross sections where the plane-wave assumption is still valid. In this paper, the recently developed BEM impedance-toscattering matrix method for large silencer analysis is extended to large three-port silencers so that the higherorder propagating modes at the inlets and outlets can be considered in the transmission loss (TL) calculation. The BEM TL solution is validated by an equivalent IL solution using the Automatically Matched Layer (AML) in the FEM for the one-inlet/two-outlet configuration.

AB - Three-port silencers are frequently used in industry to merge two inlets into one common outlet stream or one inlet into two outlets. The current approaches to analyze the three-port silencers, including the BEM impedance matrix and the superposition method, are limited to small inlet and small outlet cross sections where the plane-wave assumption is still valid. In this paper, the recently developed BEM impedance-toscattering matrix method for large silencer analysis is extended to large three-port silencers so that the higherorder propagating modes at the inlets and outlets can be considered in the transmission loss (TL) calculation. The BEM TL solution is validated by an equivalent IL solution using the Automatically Matched Layer (AML) in the FEM for the one-inlet/two-outlet configuration.

KW - BEM

KW - FEM-AML

KW - Large three-port silencer

KW - Scattering matrix

KW - Transmission loss

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T2 - 46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, INTER-NOISE 2017

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ER -

BEM analysis of large three-port silencers with FEM-AML validation

Abstract

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

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