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Article: Effect of flow on the drumlike silencer

TitleEffect of flow on the drumlike silencer
Authors
Issue Date2005
PublisherAcoustical Society of America. The Journal's web site is located at http://asa.aip.org/jasa.html
Citation
Journal Of The Acoustical Society Of America, 2005, v. 118 n. 5, p. 3077-3085 How to Cite?
AbstractThis study examines the effects of a mean flow and turbulent flow excitation on the performance of the recently conceived device which was tested under the no-flow condition [J. Acoust. Soc. Am. 112, 2014-2035 (2002)]. The silencer consists of two cavity-backed membranes lining part of the duct walls. When a certain optimal tension is applied, the silencer gives a broad stopband in the low-frequency regime. Similar performance is predicted for the condition with a mean flow, and tests conducted for flow speeds from 5 to 15 m/s validated these predictions. The spectrum of transmission loss without flow features three resonance peaks, and the mean flow is found to smooth out all peaks and shift two of them through cross-modal coupling. The silencer was tested in a wind tunnel, and no flow induced flexural instability was found on the membrane in the range of flow speeds tested. Insertion loss measurement was also conducted in a natural ventilation condition where a turbulence intensity of 3% was recorded, and the results were close to those without flow. It is concluded that no noticeable extra sound is produced by the turbulent excitation of the membrane under the optimal tension required by the silencer. © 2005 Acoustical Society of America.
Persistent Identifierhttp://hdl.handle.net/10722/156793
ISSN
2015 Impact Factor: 1.572
2015 SCImago Journal Rankings: 0.938
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChoy, YSen_US
dc.contributor.authorHuang, Len_US
dc.date.accessioned2012-08-08T08:43:59Z-
dc.date.available2012-08-08T08:43:59Z-
dc.date.issued2005en_US
dc.identifier.citationJournal Of The Acoustical Society Of America, 2005, v. 118 n. 5, p. 3077-3085en_US
dc.identifier.issn0001-4966en_US
dc.identifier.urihttp://hdl.handle.net/10722/156793-
dc.description.abstractThis study examines the effects of a mean flow and turbulent flow excitation on the performance of the recently conceived device which was tested under the no-flow condition [J. Acoust. Soc. Am. 112, 2014-2035 (2002)]. The silencer consists of two cavity-backed membranes lining part of the duct walls. When a certain optimal tension is applied, the silencer gives a broad stopband in the low-frequency regime. Similar performance is predicted for the condition with a mean flow, and tests conducted for flow speeds from 5 to 15 m/s validated these predictions. The spectrum of transmission loss without flow features three resonance peaks, and the mean flow is found to smooth out all peaks and shift two of them through cross-modal coupling. The silencer was tested in a wind tunnel, and no flow induced flexural instability was found on the membrane in the range of flow speeds tested. Insertion loss measurement was also conducted in a natural ventilation condition where a turbulence intensity of 3% was recorded, and the results were close to those without flow. It is concluded that no noticeable extra sound is produced by the turbulent excitation of the membrane under the optimal tension required by the silencer. © 2005 Acoustical Society of America.en_US
dc.languageengen_US
dc.publisherAcoustical Society of America. The Journal's web site is located at http://asa.aip.org/jasa.htmlen_US
dc.relation.ispartofJournal of the Acoustical Society of Americaen_US
dc.titleEffect of flow on the drumlike silenceren_US
dc.typeArticleen_US
dc.identifier.emailHuang, L:lixi@hku.hken_US
dc.identifier.authorityHuang, L=rp00119en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1121/1.2047207en_US
dc.identifier.scopuseid_2-s2.0-27744517941en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-27744517941&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume118en_US
dc.identifier.issue5en_US
dc.identifier.spage3077en_US
dc.identifier.epage3085en_US
dc.identifier.isiWOS:000233281300036-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridChoy, YS=7004920275en_US
dc.identifier.scopusauthoridHuang, L=7404735514en_US

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