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Article: Membrane covered duct lining for high-frequency noise attenuation: Prediction using a Chebyshev collocation method

TitleMembrane covered duct lining for high-frequency noise attenuation: Prediction using a Chebyshev collocation method
Authors
Issue Date2008
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, 2008, v. 124 n. 5, p. 2918-2929 How to Cite?
AbstractA spectral method of Chebyshev collocation with domain decomposition is introduced for linear interaction between sound and structure in a duct lined with flexible walls backed by cavities with or without a porous material. The spectral convergence is validated by a one-dimensional problem with a closed-form analytical solution, and is then extended to the two-dimensional configuration and compared favorably against a previous method based on the Fourier-Galerkin procedure and a finite element modeling. The nonlocal, exact Dirichlet-to-Neumann boundary condition is embedded in the domain decomposition scheme without imposing extra computational burden. The scheme is applied to the problem of high-frequency sound absorption by duct lining, which is normally ineffective when the wavelength is comparable with or shorter than the duct height. When a tensioned membrane covers the lining, however, it scatters the incident plane wave into higher-order modes, which then penetrate the duct lining more easily and get dissipated. For the frequency range of f=0.3-3 studied here, f=0.5 being the first cut-on frequency of the central duct, the membrane cover is found to offer an additional 0.9 dB attenuation per unit axial distance equal to half of the duct height. © 2008 Acoustical Society of America.
Persistent Identifierhttp://hdl.handle.net/10722/156989
ISSN
2015 Impact Factor: 1.572
2015 SCImago Journal Rankings: 0.938
ISI Accession Number ID
Funding AgencyGrant Number
Council of the Hong Kong SAR GovernmentHKU 5298/03E
HKU5170/05E
Funding Information:

The author thanks the Research Grants Council of the Hong Kong SAR Government for its funding of two related research projects (HKU 5298/03E and HKU5170/05E).

References
Grants

 

DC FieldValueLanguage
dc.contributor.authorHuang, Len_US
dc.date.accessioned2012-08-08T08:44:50Z-
dc.date.available2012-08-08T08:44:50Z-
dc.date.issued2008en_US
dc.identifier.citationJournal Of The Acoustical Society Of America, 2008, v. 124 n. 5, p. 2918-2929en_US
dc.identifier.issn0001-4966en_US
dc.identifier.urihttp://hdl.handle.net/10722/156989-
dc.description.abstractA spectral method of Chebyshev collocation with domain decomposition is introduced for linear interaction between sound and structure in a duct lined with flexible walls backed by cavities with or without a porous material. The spectral convergence is validated by a one-dimensional problem with a closed-form analytical solution, and is then extended to the two-dimensional configuration and compared favorably against a previous method based on the Fourier-Galerkin procedure and a finite element modeling. The nonlocal, exact Dirichlet-to-Neumann boundary condition is embedded in the domain decomposition scheme without imposing extra computational burden. The scheme is applied to the problem of high-frequency sound absorption by duct lining, which is normally ineffective when the wavelength is comparable with or shorter than the duct height. When a tensioned membrane covers the lining, however, it scatters the incident plane wave into higher-order modes, which then penetrate the duct lining more easily and get dissipated. For the frequency range of f=0.3-3 studied here, f=0.5 being the first cut-on frequency of the central duct, the membrane cover is found to offer an additional 0.9 dB attenuation per unit axial distance equal to half of the duct height. © 2008 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.subject.meshConstruction Materials - Standardsen_US
dc.subject.meshHumansen_US
dc.subject.meshNoise - Prevention & Controlen_US
dc.subject.meshNoise, Occupational - Prevention & Controlen_US
dc.subject.meshSounden_US
dc.titleMembrane covered duct lining for high-frequency noise attenuation: Prediction using a Chebyshev collocation methoden_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.doi10.1121/1.2977743en_US
dc.identifier.pmid19045780-
dc.identifier.scopuseid_2-s2.0-56749150009en_US
dc.identifier.hkuros155003-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-56749150009&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume124en_US
dc.identifier.issue5en_US
dc.identifier.spage2918en_US
dc.identifier.epage2929en_US
dc.identifier.eissn1520-8524-
dc.identifier.isiWOS:000260836700028-
dc.publisher.placeUnited Statesen_US
dc.relation.projectBroadband duct noise control at very low frequencies-
dc.identifier.scopusauthoridHuang, L=7404735514en_US

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