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Article: Acoustic radiation by vortex induced flexible wall vibration
Title | Acoustic radiation by vortex induced flexible wall vibration |
---|---|
Authors | |
Keywords | Acoustic wave propagation Asymptotic stability Boundary value problems Eddy currents Turbulence |
Issue Date | 2005 |
Publisher | Acoustical 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. 4, p. 2182-2189 How to Cite? |
Abstract | Sound radiation due to unsteady interaction between an inviscid vortex (which models a turbulent eddy) and a finite length flexible boundary in a two-dimensional space is studied using potential theory and the matched asymptotic expansion technique. The Mach number of the vortex propagation is kept below 0.15. Results suggest that the monopole field created by the volumetric flow induced by the vibrating flexible boundary dominates the overall acoustic power radiation. The longitudinal dipole directly due to the transverse vortex acceleration is only important when the vortex is moving over the flexible boundary. The longitudinal dipole resulting from the boundary vibration gains slightly in importance in the strong vortex case, but the corresponding transverse dipole remains negligible for the cases considered in the present study. The two longitudinal dipoles give rise to biased radiation directivities on both sides of the flexible boundary. © 2005 Acoustical Society of America. |
Persistent Identifier | http://hdl.handle.net/10722/44622 |
ISSN | 2023 Impact Factor: 2.1 2023 SCImago Journal Rankings: 0.687 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Tang, SK | en_HK |
dc.contributor.author | Leung, RCK | en_HK |
dc.contributor.author | So, RMC | en_HK |
dc.contributor.author | Lam, KM | en_HK |
dc.date.accessioned | 2007-10-30T06:06:02Z | - |
dc.date.available | 2007-10-30T06:06:02Z | - |
dc.date.issued | 2005 | en_HK |
dc.identifier.citation | Journal of the Acoustical Society of America, 2005, v. 118 n. 4, p. 2182-2189 | - |
dc.identifier.issn | 0001-4966 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/44622 | - |
dc.description.abstract | Sound radiation due to unsteady interaction between an inviscid vortex (which models a turbulent eddy) and a finite length flexible boundary in a two-dimensional space is studied using potential theory and the matched asymptotic expansion technique. The Mach number of the vortex propagation is kept below 0.15. Results suggest that the monopole field created by the volumetric flow induced by the vibrating flexible boundary dominates the overall acoustic power radiation. The longitudinal dipole directly due to the transverse vortex acceleration is only important when the vortex is moving over the flexible boundary. The longitudinal dipole resulting from the boundary vibration gains slightly in importance in the strong vortex case, but the corresponding transverse dipole remains negligible for the cases considered in the present study. The two longitudinal dipoles give rise to biased radiation directivities on both sides of the flexible boundary. © 2005 Acoustical Society of America. | en_HK |
dc.language | eng | en_HK |
dc.publisher | Acoustical Society of America. The Journal's web site is located at http://asa.aip.org/jasa.html | en_HK |
dc.relation.ispartof | Journal of the Acoustical Society of America | en_HK |
dc.rights | Copyright 2005 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America. The following article appeared in Journal of the Acoustical Society of America, 2005, v. 118 n. 4, p. 2182-2189 and may be found at https://doi.org/10.1121/1.2011127 | - |
dc.subject | Acoustic wave propagation | en_HK |
dc.subject | Asymptotic stability | en_HK |
dc.subject | Boundary value problems | - |
dc.subject | Eddy currents | - |
dc.subject | Turbulence | - |
dc.title | Acoustic radiation by vortex induced flexible wall vibration | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0001-4966&volume=118&issue=4&spage=2182&epage=2189&date=2005&atitle=Acoustic+radiation+by+vortex+induced+flexible+wall+vibration | en_HK |
dc.identifier.email | Lam, KM:kmlam@hku.hk | en_HK |
dc.identifier.authority | Lam, KM=rp00134 | en_HK |
dc.description.nature | published_or_final_version | en_HK |
dc.identifier.doi | 10.1121/1.2011127 | en_HK |
dc.identifier.scopus | eid_2-s2.0-26844534417 | en_HK |
dc.identifier.hkuros | 177003 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-26844534417&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 118 | en_HK |
dc.identifier.issue | 4 | en_HK |
dc.identifier.spage | 2182 | en_HK |
dc.identifier.epage | 2189 | en_HK |
dc.identifier.isi | WOS:000232712700012 | - |
dc.publisher.place | United States | en_HK |
dc.identifier.scopusauthorid | Tang, SK=7403436418 | en_HK |
dc.identifier.scopusauthorid | Leung, RCK=7101876138 | en_HK |
dc.identifier.scopusauthorid | So, RMC=16489407100 | en_HK |
dc.identifier.scopusauthorid | Lam, KM=7403656958 | en_HK |
dc.identifier.issnl | 0001-4966 | - |