The effect of temperature on the acoustic performance of splitter silencers

Kirby, R; Williams, PT; Hill, J

The effect of temperature on the acoustic performance of splitter silencers

Kirby, R

Williams, PT Hill, J

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Publication Type:: Conference Proceeding
Citation:: 42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life, 2013, 7 pp. 5826 - 5833
Issue Date:: 2013-01-01

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Field	Value	Language
dc.contributor.author	Kirby, R https://orcid.org/0000-0002-3520-1377	en_US
dc.contributor.author	Williams, PT	en_US
dc.contributor.author	Hill, J	en_US
dc.date.issued	2013-01-01	en_US
dc.identifier.citation	42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life, 2013, 7 pp. 5826 - 5833	en_US
dc.identifier.isbn	9781632662675	en_US
dc.identifier.uri	http://hdl.handle.net/10453/117879
dc.description.abstract	In gas turbine exhaust systems dissipative silencers are normally used to attenuate broadband noise emanating from the turbine. These silencers often consist of parallel baffles packed with fibrous porous materials such as basalt wool. In gas turbine exhausts, temperatures can reach up to 700 °C and this can significantly affect silencer performance. Accordingly, the influence of elevated temperatures on silencer insertion loss is investigated here for one third octave bands up to a frequency of 8 kHz. Values for silencer insertion loss are generated using a theoretical model based on the finite element method and point collocation. Predictions draw on experimental data obtained for the bulk acoustic properties of basalt wool at temperatures of up to 500 °C. It is shown here that temperature significantly affects silencer performance and this effect should be compensated for when attempting to quantify silencer performance in high temperature applications.	en_US
dc.relation.ispartof	42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life	en_US
dc.title	The effect of temperature on the acoustic performance of splitter silencers	en_US
dc.type	Conference Proceeding
utslib.citation.volume	7	en_US
utslib.for	020301 Acoustics and Acoustical Devices; Waves	en_US
utslib.for	0913 Mechanical 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	closed_access
pubs.publication-status	Published	en_US
pubs.volume	7	en_US

Abstract:

In gas turbine exhaust systems dissipative silencers are normally used to attenuate broadband noise emanating from the turbine. These silencers often consist of parallel baffles packed with fibrous porous materials such as basalt wool. In gas turbine exhausts, temperatures can reach up to 700 °C and this can significantly affect silencer performance. Accordingly, the influence of elevated temperatures on silencer insertion loss is investigated here for one third octave bands up to a frequency of 8 kHz. Values for silencer insertion loss are generated using a theoretical model based on the finite element method and point collocation. Predictions draw on experimental data obtained for the bulk acoustic properties of basalt wool at temperatures of up to 500 °C. It is shown here that temperature significantly affects silencer performance and this effect should be compensated for when attempting to quantify silencer performance in high temperature applications.

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http://hdl.handle.net/10453/117879