Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/106462
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dc.contributorDepartment of Mechanical Engineering-
dc.creatorYang, Wen_US
dc.creatorChoy, YSen_US
dc.date.accessioned2024-05-09T00:53:41Z-
dc.date.available2024-05-09T00:53:41Z-
dc.identifier.isbn978-3-939296-15-7en_US
dc.identifier.urihttp://hdl.handle.net/10397/106462-
dc.language.isoenen_US
dc.publisherRWTH Aachen Universityen_US
dc.rights© 2019 by Deutsche Gesellschaft für Akustik e.V. (DEGA)en_US
dc.rightsThis work is licensed under the CC BY-SA.en_US
dc.rightsThe following publication Yang, W., & Choy, Y. S. (2019). Theoretical model for the prediction of sound radiated from unbaffled long enclosure with ground effect. In M. Ochmann, M. Vorländer & J. Fels (Eds), Proceedings of the 23rd International Congress on Acoustics : integrating 4th EAA Euroregio 2019 : 9-13 September 2019 in Aachen, Germany. Berlin, Germany : Deutsche Gesellschaft für Akustik, 2019 is available at https://publications.rwth-aachen.de/record/769277.en_US
dc.subjectSound radiationen_US
dc.subjectUnbaffled long enclosureen_US
dc.subjectWiener-Hopf techniqueen_US
dc.titleTheoretical model for the prediction of sound radiated from unbaffled long enclosure with ground effecten_US
dc.typeConference Paperen_US
dc.identifier.spage2057en_US
dc.identifier.epage2064en_US
dc.identifier.doi10.18154/RWTH-CONV-238866en_US
dcterms.abstractA theoretical model is presented for the prediction of sound radiated from an unbaffled long enclosure with ground effect. This geometrical arrangement forms an idealized representation of traffic facilities such as tunnels and railway stations where sound propagates along the enclosures and radiates to the outside through the openings at both ends. The sound fields inside and outside the enclosures should be accurately predicted and thoroughly analyzed so as to determine an appropriate noise control strategy. In this paper, the Fourier transform technique and the mode matching method are firstly applied to transform the intractable boundary value problem into a scalar modified Wiener-Hopf equation. The solution of which contains infinitely many unknowns satisfying infinite linear algebraic equations susceptible to numerical treatment. Good agreement is found between the solutions obtained by the finite element method (FEM) and the proposed technique in a wide frequency range. Then, the far-field directivity patterns of the outside acoustic fields are emphatically illustrated and the formation mechanisms of lobes, zeros and the after radiation are discussed in details. In the end, the advantages and the application prospects of the proposed method are summarized.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationProceedings of the 23rd International Congress on Acoustics : integrating 4th EAA Euroregio 2019 : 9-13 September 2019 in Aachen, Germany, p. 2057-2064en_US
dcterms.issued2019-
dc.identifier.scopus2-s2.0-85062999034-
dc.relation.conferenceInternational Congress on Acoustics [ICA]-
dc.description.validate202405 bcch-
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberME-0552-
dc.description.fundingSourceOthersen_US
dc.description.fundingTextThe Hong Kong Polytechnic Universityen_US
dc.description.pubStatusPublisheden_US
dc.identifier.OPUS53373597-
dc.description.oaCategoryCCen_US
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