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dc.contributor.authorHoroshenkov, Kirill V.*
dc.contributor.authorChandler-Wilde, S.N.*
dc.date.accessioned2009-07-06T13:08:37Z
dc.date.available2009-07-06T13:08:37Z
dc.date.issued2009-07-06T13:08:37Z
dc.identifier.citationHoroshenko, K.V. and Chandler-Wilde, S.N. (2002). Efficient calculation of two-dimensional periodic and waveguide acoustic Green's functions. The Journal of the Acoustical Society of America. Vol. 111, No. 4, pp. 1610-1622.en
dc.identifier.urihttp://hdl.handle.net/10454/2940
dc.descriptionNoen
dc.description.abstractNew representations and efficient calculation methods are derived for the problem of propagation from an infinite regularly spaced array of coherent line sources above a homogeneous impedance plane, and for the Green's function for sound propagation in the canyon formed by two infinitely high, parallel rigid or sound soft walls and an impedance ground surface. The infinite sum of source contributions is replaced by a finite sum and the remainder is expressed as a Laplace-type integral. A pole subtraction technique is used to remove poles in the integrand which lie near the path of integration, obtaining a smooth integrand, more suitable for numerical integration, and a specific numerical integration method is proposed. Numerical experiments show highly accurate results across the frequency spectrum for a range of ground surface types. It is expected that the methods proposed will prove useful in boundary element modeling of noise propagation in canyon streets and in ducts, and for problems of scattering by periodic surfaces.en
dc.language.isoenen
dc.relation.isreferencedbyhttp://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=JASMAN000111000004001610000001&idtype=cvips&prog=normalen
dc.subjectIntegrationen
dc.subjectAcoustic wave propagation,en
dc.subjectAcoustic wave scatteringen
dc.subjectGreen's function methodsen
dc.subjectAcoustic waveguidesen
dc.subjectAcoustic fielden
dc.subjectAtmospheric acousticsen
dc.subjectBoundary-elements methodsen
dc.subjectLaplace transformsen
dc.subjectAcoustic radiatorsen
dc.subjectAcoustic impedanceen
dc.titleEfficient calculation of two-dimensional periodic and waveguide acoustic Green's functions.en
dc.status.refereedYesen
dc.typeArticleen
dc.type.versionNo full-text available in the repositoryen


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