File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Attenuation of low frequency duct noise by a flute-like silencer

TitleAttenuation of low frequency duct noise by a flute-like silencer
Authors
Issue Date2009
PublisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/jsvi
Citation
Journal Of Sound And Vibration, 2009, v. 326 n. 1-2, p. 161-176 How to Cite?
AbstractA broadband, duct noise reflection mechanism is introduced in this theoretical study. It consists of side-branch cavities filled with a light gas, e.g. helium, and covered by impervious, tensioned membranes as two apertures, one at the inlet and another at the exit. Incident waves are scattered by the membranes into two passages, one through the central duct and another through the cavity bypass. Due to the faster speed of sound in the bypass, a Herschel-Quincke tube resonance appears and gives a peak in the transmission loss spectrum. Another resonance occurs when the frequency of the incident sound coincides with the vibroacoustic frequency determined by the membrane tension and inertia contributions from the membrane and the fluid media. With appropriate tensile stress, the trough between the two spectral peaks can be elevated to a desirable high level, e.g. 10 dB, and the crucial factor is identified as the low density of the cavity gas filling. The broadband sound reflection performance is comparable with and even exceeds that of the drum-like silencer [L. Huang, Parametric study of a drum-like silencer, Journal of Sound and Vibration 269 (2004) 467-488] with the same cavity geometry, but the current mechanism requires a low tensile stress which is much easier to implement in practice. © 2009 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/157015
ISSN
2015 Impact Factor: 2.107
2015 SCImago Journal Rankings: 1.494
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorHuang, Len_US
dc.date.accessioned2012-08-08T08:44:57Z-
dc.date.available2012-08-08T08:44:57Z-
dc.date.issued2009en_US
dc.identifier.citationJournal Of Sound And Vibration, 2009, v. 326 n. 1-2, p. 161-176en_US
dc.identifier.issn0022-460Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/157015-
dc.description.abstractA broadband, duct noise reflection mechanism is introduced in this theoretical study. It consists of side-branch cavities filled with a light gas, e.g. helium, and covered by impervious, tensioned membranes as two apertures, one at the inlet and another at the exit. Incident waves are scattered by the membranes into two passages, one through the central duct and another through the cavity bypass. Due to the faster speed of sound in the bypass, a Herschel-Quincke tube resonance appears and gives a peak in the transmission loss spectrum. Another resonance occurs when the frequency of the incident sound coincides with the vibroacoustic frequency determined by the membrane tension and inertia contributions from the membrane and the fluid media. With appropriate tensile stress, the trough between the two spectral peaks can be elevated to a desirable high level, e.g. 10 dB, and the crucial factor is identified as the low density of the cavity gas filling. The broadband sound reflection performance is comparable with and even exceeds that of the drum-like silencer [L. Huang, Parametric study of a drum-like silencer, Journal of Sound and Vibration 269 (2004) 467-488] with the same cavity geometry, but the current mechanism requires a low tensile stress which is much easier to implement in practice. © 2009 Elsevier Ltd. All rights reserved.en_US
dc.languageengen_US
dc.publisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/jsvien_US
dc.relation.ispartofJournal of Sound and Vibrationen_US
dc.titleAttenuation of low frequency duct noise by a flute-like 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.doi10.1016/j.jsv.2009.05.004en_US
dc.identifier.scopuseid_2-s2.0-67651146362en_US
dc.identifier.hkuros171601-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-67651146362&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume326en_US
dc.identifier.issue1-2en_US
dc.identifier.spage161en_US
dc.identifier.epage176en_US
dc.identifier.isiWOS:000269269400009-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridHuang, L=7404735514en_US
dc.identifier.citeulike4839552-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats