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dc.contributorVirginia Tech. Engineering Science and Mechanics Departmenten_US
dc.contributor.authorSun, Johnen_US
dc.contributor.authorNayfeh, Ali H.en_US
dc.date.accessioned2015-05-28T14:56:08Z
dc.date.available2015-05-28T14:56:08Z
dc.date.issued1976
dc.identifier.citationSun, J. N. & Nayfeh, A. H. (1976). Influence of anisotropic liners on the attenuation of sound in circular ducts. Journal of the Acoustical Society of America, 59(5), 1065-1070. doi: 10.1121/1.380971en_US
dc.identifier.issn0001-4966en_US
dc.identifier.urihttp://hdl.handle.net/10919/52718
dc.description.abstractAn analysis is presented of the sound propagation and attenuation in a circular duct carrying a uniform mean flow and lined with an anisotropicporous material backed by cellular cavities. A combination of a fourth-order Runge-Kutta routine and a Newton-Raphson procedure is used to determine the effects of the liner properties, the flowMach number, and the sound frequency on the attenuation of spinning and nonspinning modes. The results show that low-frequency noise is better attenuated by anisotropic liners. The optimum liner is the one whose axial resistivity increases with increasing frequency.en_US
dc.description.sponsorshipNaval Surface Weapons Centeren_US
dc.format.extent6 pagesen_US
dc.format.mimetypeapplication/pdfen_US
dc.language.isoen_USen_US
dc.publisherAcoustical Society of Americaen_US
dc.subjectAnisotropyen_US
dc.subjectDuct flowsen_US
dc.subjectAcoustic analysisen_US
dc.subjectAcoustic noiseen_US
dc.subjectAcoustical effectsen_US
dc.titleInfluence of anisotropic liners on the attenuation of sound in circular ductsen_US
dc.typeArticleen_US
dc.identifier.urlhttp://scitation.aip.org/content/asa/journal/jasa/59/5/10.1121/1.380971en_US
dc.date.accessed2015-05-12en_US
dc.title.serialJournal of the Acoustical Society of Americaen_US
dc.identifier.doihttps://doi.org/10.1121/1.380971
dc.type.dcmitypeTexten_US


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