A multidomain boundary element solution for silencer and muffler performance prediction

C. Y.R. Cheng; A. F. Seybert; T. W. Wu

doi:10.1016/0022-460X(91)90655-4

A multidomain boundary element solution for silencer and muffler performance prediction

C. Y.R. Cheng, A. F. Seybert, T. W. Wu

Mechanical and Aerospace Engineering

Research output: Contribution to journal › Article › peer-review

89 Scopus citations

Abstract

The multidomain boundary element technique is used for the analysis of muffler problems in which the acoustic region consists of thin obstacles, such as extended inlet or outlet tubes and internal connecting tubes. In this technique, a muffler is first divided into several subdomains and then the well-known Helmholtz integral equation is applied to each subdomain. Continuity conditions of acoustic pressure and normal velocity are enforced at the interface between two neighboring subdomains. A set of simultaneous linear equations can then be constructed and solved for the boundary unknowns, as well as the interface variables. The boundary element solution is compared with a finite element solution. Excellent agreement between these two solutions is observed in producing the transmission loss curves for different muffler configurations.

Original language	English
Pages (from-to)	119-129
Number of pages	11
Journal	Journal of Sound and Vibration
Volume	151
Issue number	1
DOIs	https://doi.org/10.1016/0022-460X(91)90655-4
State	Published - Nov 22 1991

Bibliographical note

Funding Information:
The authors would like to thank Dr D. F. Ross of Garrett Turbine Engine Company for providing the finite element data reported in this paper. This work was supported by NSF grant MSM-8810909.

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Acoustics and Ultrasonics
Mechanical Engineering

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10.1016/0022-460X(91)90655-4

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title = "A multidomain boundary element solution for silencer and muffler performance prediction",

abstract = "The multidomain boundary element technique is used for the analysis of muffler problems in which the acoustic region consists of thin obstacles, such as extended inlet or outlet tubes and internal connecting tubes. In this technique, a muffler is first divided into several subdomains and then the well-known Helmholtz integral equation is applied to each subdomain. Continuity conditions of acoustic pressure and normal velocity are enforced at the interface between two neighboring subdomains. A set of simultaneous linear equations can then be constructed and solved for the boundary unknowns, as well as the interface variables. The boundary element solution is compared with a finite element solution. Excellent agreement between these two solutions is observed in producing the transmission loss curves for different muffler configurations.",

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note = "Funding Information: The authors would like to thank Dr D. F. Ross of Garrett Turbine Engine Company for providing the finite element data reported in this paper. This work was supported by NSF grant MSM-8810909.",

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AU - Seybert, A. F.

AU - Wu, T. W.

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A multidomain boundary element solution for silencer and muffler performance prediction

Abstract

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