Sound attenuation in partially-filled perforated dissipative mufflers with extended inlet/outlet

Denia, FD; Selamet, A; Fuenmayor, FJ; Kirby, R

Sound attenuation in partially-filled perforated dissipative mufflers with extended inlet/outlet

Denia, FD Selamet, A Fuenmayor, FJ Kirby, R

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Publication Type:: Conference Proceeding
Citation:: 12th International Congress on Sound and Vibration 2005, ICSV 2005, 2005, 3 pp. 2208 - 2215
Issue Date:: 2005-12-01

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Field	Value	Language
dc.contributor.author	Denia, FD	en_US
dc.contributor.author	Selamet, A	en_US
dc.contributor.author	Fuenmayor, FJ	en_US
dc.contributor.author	Kirby, R https://orcid.org/0000-0002-3520-1377	en_US
dc.date.issued	2005-12-01	en_US
dc.identifier.citation	12th International Congress on Sound and Vibration 2005, ICSV 2005, 2005, 3 pp. 2208 - 2215	en_US
dc.identifier.isbn	9781627481496	en_US
dc.identifier.uri	http://hdl.handle.net/10453/117890
dc.description.abstract	The current study considers the acoustic characteristics of partially-filled perforated dissipative circular mufflers with extended inlet/outlet. In addition to the finite element method (FEM), a two-dimensional (2-D) axisymmetric analytical approach is developed that matches the acoustic field across the discontinuities by applying the continuity conditions of the acoustic pressure and velocity. The complex characteristic impedance, wavenumber and perforation impedance are taken into account to evaluate the axial wavenumber in the absorbing fiber and in the central perforated pipe. In addition, experimental work is considered for validation purposes. Several effects regarding the extended inlet/outlet ducts and the fiber properties are presented and discussed.	en_US
dc.relation.ispartof	12th International Congress on Sound and Vibration 2005, ICSV 2005	en_US
dc.title	Sound attenuation in partially-filled perforated dissipative mufflers with extended inlet/outlet	en_US
dc.type	Conference Proceeding
utslib.citation.volume	3	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	closed_access
pubs.publication-status	Published	en_US
pubs.volume	3	en_US

Abstract:

The current study considers the acoustic characteristics of partially-filled perforated dissipative circular mufflers with extended inlet/outlet. In addition to the finite element method (FEM), a two-dimensional (2-D) axisymmetric analytical approach is developed that matches the acoustic field across the discontinuities by applying the continuity conditions of the acoustic pressure and velocity. The complex characteristic impedance, wavenumber and perforation impedance are taken into account to evaluate the axial wavenumber in the absorbing fiber and in the central perforated pipe. In addition, experimental work is considered for validation purposes. Several effects regarding the extended inlet/outlet ducts and the fiber properties are presented and discussed.

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http://hdl.handle.net/10453/117890