Simulation analysis of acoustic attenuation performance for different shape of an expansion chamber silencer

Zhaorong Zhang; Jianliang Li; Cheuk Ming Mak

doi:10.1109/ICIC.2009.110

Simulation analysis of acoustic attenuation performance for different shape of an expansion chamber silencer

Zhaorong Zhang, Jianliang Li, Cheuk Ming Mak

The Hong Kong Polytechnic University

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

5 Citations (Scopus)

Abstract

This paper studied the internal laws of silencers' acoustic attenuation performance, when the cross-sectional shape, length and diameter of the expansion chamber changed. Based on the BEM-FEM coupled model and to combine with the improved Four-pole Parameters Method, the transmission loss (TL) was calculated. It is pointed that the flatter the expansion chamber is, the worse the performance is. When the length decreases, the domes of the TL become broader, and the number of domes decreases. When the diameter increases, the TL increases, but the growth rate and the inactive frequency decrease. The results indicate that by using computer modeling analysis, it is sensible to optimize the shape to meet the needs of the eliminating frequency band and the applied circumstance.

Original language	English
Title of host publication	2009 2nd International Conference on Information and Computing Science, ICIC 2009
Pages	10-13
Number of pages	4
Volume	2
DOIs	https://doi.org/10.1109/ICIC.2009.110
Publication status	Published - 19 Nov 2009
Event	2009 2nd International Conference on Information and Computing Science, ICIC 2009 - Manchester, United Kingdom Duration: 21 May 2009 → 22 May 2009

Conference

Conference	2009 2nd International Conference on Information and Computing Science, ICIC 2009
Country/Territory	United Kingdom
City	Manchester
Period	21/05/09 → 22/05/09

Keywords

BEM
FEM
Numerical simulation
Silencer

ASJC Scopus subject areas

Artificial Intelligence
Computational Theory and Mathematics
Computer Science Applications
Software

More information

10.1109/ICIC.2009.110

Cite this

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title = "Simulation analysis of acoustic attenuation performance for different shape of an expansion chamber silencer",

abstract = "This paper studied the internal laws of silencers' acoustic attenuation performance, when the cross-sectional shape, length and diameter of the expansion chamber changed. Based on the BEM-FEM coupled model and to combine with the improved Four-pole Parameters Method, the transmission loss (TL) was calculated. It is pointed that the flatter the expansion chamber is, the worse the performance is. When the length decreases, the domes of the TL become broader, and the number of domes decreases. When the diameter increases, the TL increases, but the growth rate and the inactive frequency decrease. The results indicate that by using computer modeling analysis, it is sensible to optimize the shape to meet the needs of the eliminating frequency band and the applied circumstance.",

keywords = "BEM, FEM, Numerical simulation, Silencer",

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Zhang, Z, Li, J & Mak, CM 2009, Simulation analysis of acoustic attenuation performance for different shape of an expansion chamber silencer. in 2009 2nd International Conference on Information and Computing Science, ICIC 2009. vol. 2, 5168994, pp. 10-13, 2009 2nd International Conference on Information and Computing Science, ICIC 2009, Manchester, United Kingdom, 21/05/09. https://doi.org/10.1109/ICIC.2009.110

Simulation analysis of acoustic attenuation performance for different shape of an expansion chamber silencer. / Zhang, Zhaorong; Li, Jianliang; Mak, Cheuk Ming.
2009 2nd International Conference on Information and Computing Science, ICIC 2009. Vol. 2 2009. p. 10-13 5168994.

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

TY - GEN

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AU - Zhang, Zhaorong

AU - Li, Jianliang

AU - Mak, Cheuk Ming

PY - 2009/11/19

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N2 - This paper studied the internal laws of silencers' acoustic attenuation performance, when the cross-sectional shape, length and diameter of the expansion chamber changed. Based on the BEM-FEM coupled model and to combine with the improved Four-pole Parameters Method, the transmission loss (TL) was calculated. It is pointed that the flatter the expansion chamber is, the worse the performance is. When the length decreases, the domes of the TL become broader, and the number of domes decreases. When the diameter increases, the TL increases, but the growth rate and the inactive frequency decrease. The results indicate that by using computer modeling analysis, it is sensible to optimize the shape to meet the needs of the eliminating frequency band and the applied circumstance.

AB - This paper studied the internal laws of silencers' acoustic attenuation performance, when the cross-sectional shape, length and diameter of the expansion chamber changed. Based on the BEM-FEM coupled model and to combine with the improved Four-pole Parameters Method, the transmission loss (TL) was calculated. It is pointed that the flatter the expansion chamber is, the worse the performance is. When the length decreases, the domes of the TL become broader, and the number of domes decreases. When the diameter increases, the TL increases, but the growth rate and the inactive frequency decrease. The results indicate that by using computer modeling analysis, it is sensible to optimize the shape to meet the needs of the eliminating frequency band and the applied circumstance.

KW - BEM

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Simulation analysis of acoustic attenuation performance for different shape of an expansion chamber silencer

Abstract

Conference

Keywords

ASJC Scopus subject areas

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