A geometric acoustics approach to the study of sound propagation in ducts containing sheared flows

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dc.contributorVirginia Tech. Department of Mechanical Engineeringen
dc.contributorProctor & Gamble Companyen
dc.contributor.authorGrimm, Denny W.en
dc.contributor.authorHurst, Charles J.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessed2015-05-12en
dc.date.accessioned2015-05-27T19:50:20Zen
dc.date.available2015-05-27T19:50:20Zen
dc.date.issued1979-12-01en
dc.description.abstractGeometric acoustics has been used to study the propagation of sound waves in a homogeneous moving medium with sheared flow bounded by the hard walls of a duct. Differential equations describing the ray trajectories and the spreading losses along each ray were developed and solved numerically for a range of centerline Mach numbers and shear boundary-layer thicknesses. Results were obtained which show the effects of upstream and downstream sound propagation on the ray paths. A method was also developed to allow the calculation of intensity loss profiles at specified downstream cross sections of the duct.en
dc.format.extent9 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationGrimm, D. W., & Hurst, C. J. (1979). A geometric acoustics approach to the study of sound propagation in ducts containing sheared flows. Journal of the Acoustical Society of America, 66(6), 1867-1875. doi: 10.1121/1.383619en
dc.identifier.doihttps://doi.org/10.1121/1.383619en
dc.identifier.issn0001-4966en
dc.identifier.urihttp://hdl.handle.net/10919/52661en
dc.identifier.urlhttp://scitation.aip.org/content/asa/journal/jasa/66/6/10.1121/1.383619en
dc.language.isoen_USen
dc.publisherAcoustical Society of Americaen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectDuct flowsen
dc.subjectShear flowsen
dc.subjectSound propagationen
dc.subjectAcoustical effectsen
dc.subjectDifferential equationsen
dc.titleA geometric acoustics approach to the study of sound propagation in ducts containing sheared flowsen
dc.title.serialJournal of the Acoustical Society of Americaen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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