Simplified techniques for predicting the transmission loss of a circular dissipative silencer

Kirby, R

Simplified techniques for predicting the transmission loss of a circular dissipative silencer

Kirby, R

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Publication Type:: Journal Article
Citation:: Journal of Sound and Vibration, 2001, 243 (3), pp. 403 - 426
Issue Date:: 2001-06-07

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Field	Value	Language
dc.contributor.author	Kirby, R https://orcid.org/0000-0002-3520-1377	en_US
dc.date.issued	2001-06-07	en_US
dc.identifier.citation	Journal of Sound and Vibration, 2001, 243 (3), pp. 403 - 426	en_US
dc.identifier.issn	0022-460X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/114525
dc.description.abstract	A closed-form analytical solution for the transmission loss of a dissipative silencer with a circular cross-section is described. The silencer contains a bulk reacting acoustic absorbent which is separated from a mean gas flow by a perforated screen. Theoretical predictions of the silencer transmission loss for three different dissipative silencers are compared both with experimental data and with another more complex modelling technique. Good agreement is noted between the analytical theory and experimental data in the low-to-medium frequency range. Below a defined upper frequency limit the analytical technique is also shown to provide good agreement with the finite element method. In addition it is observed that, even for relatively high open area porosities, the perforate screen has a significant effect on dissipative silencer performance.	en_US
dc.relation.ispartof	Journal of Sound and Vibration	en_US
dc.relation.isbasedon	10.1006/jsvi.2000.3425	en_US
dc.subject.classification	Acoustics	en_US
dc.title	Simplified techniques for predicting the transmission loss of a circular dissipative silencer	en_US
dc.type	Journal Article
utslib.citation.volume	3	en_US
utslib.citation.volume	243	en_US
utslib.for	02 Physical Sciences	en_US
utslib.for	09 Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
utslib.copyright.status	open_access
pubs.issue	3	en_US
pubs.publication-status	Published	en_US
pubs.volume	243	en_US

Abstract:

A closed-form analytical solution for the transmission loss of a dissipative silencer with a circular cross-section is described. The silencer contains a bulk reacting acoustic absorbent which is separated from a mean gas flow by a perforated screen. Theoretical predictions of the silencer transmission loss for three different dissipative silencers are compared both with experimental data and with another more complex modelling technique. Good agreement is noted between the analytical theory and experimental data in the low-to-medium frequency range. Below a defined upper frequency limit the analytical technique is also shown to provide good agreement with the finite element method. In addition it is observed that, even for relatively high open area porosities, the perforate screen has a significant effect on dissipative silencer performance.

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http://hdl.handle.net/10453/114525