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dc.contributor.CRUESPUNIVERSIDADE DE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authoremailselene.piantanida@univ-poitiers.frpt_BR
dc.typeArtigopt_BR
dc.titleScattering Of Turbulent-jet Wavepackets By A Swept Trailing Edgeen
dc.contributor.authorPiantanidapt_BR
dc.contributor.authorSelene; Jaunetpt_BR
dc.contributor.authorVincent; Huberpt_BR
dc.contributor.authorJerome; Wolfpt_BR
dc.contributor.authorWilliam R.; Jordanpt_BR
dc.contributor.authorPeter; Cavalieript_BR
dc.contributor.authorAndre V. G.pt_BR
unicamp.author[Wolf, William R.] Univ Estadual Campinas, Fac Engn Mecan, Dept Energia, Unicamp, Rua Mendeleyev 200, BR-13083970 Campinas, SP, Brazilpt_BR
unicamp.author.external[Piantanida, Selenept_BR
unicamp.author.externalJaunet, Vincentpt_BR
unicamp.author.externalJordan, Peter] Inst Pprime, 43 Rue Aerodrome, F-86036 Poitiers, Francept_BR
unicamp.author.external[Huber, Jerome] Airbus Operat, Acoust Dept, 316 Route Bayonne, F-31060 Toulouse, Francept_BR
unicamp.author.external[Cavalieri, Andre V. G.] Inst Tecnol, Div Engn Aeronaut, Praca Mal Eduardo Gomes,50,Vila Acacias, BR-12228900 Sao Jose Dos Campos, SP, Brazilpt_BR
dc.description.abstractInstalled jet noise is studied by means of a simplified configuration comprising a flat plate in the vicinity of a round jet. The effects of Mach number, jet-plate radial distance, and trailing-edge sweep angle are explored. Acoustic measurements are performed using a traversable 18-microphone azimuthal array, providing pressure data at 360 points on a cylindrical surface surrounding the jet-plate system. Key observations include a decrease, with increasing Mach number, of the relative level of the scattered field in comparison to the uninstalled jet; an exponential dependence of the scattered sound pressure level on the radial jet-plate separation; and considerable sideline noise reductions with increasing sweep angle, with which there is an overall reduction in acoustic efficiency. The measurements are compared with results obtained using a kinematic wave-packet source model, whose radiation is computed in two ways. A TGF for a semi-infinite flat plate is used to provide a low-order approximation of the scattering effect. Use of a more computationally intensive boundary element method provides additional precision. Good agreement between model predictions and experiment, encouraging from the perspective of low-cost prediction strategies, demonstrates that the models comprise the essential sound generation mechanisms. (C) 2016 Acoustical Society of America.en
dc.relation.ispartofThe Journal of the Acoustical Society of Americapt_BR
dc.publisherAcoustical Soc Amer Amer Inst Physicspt_BR
dc.publisherMiamipt_BR
dc.date.issued2016pt_BR
dc.date.monthofcirculationdezpt_BR
dc.identifier.citationThe Journal Of The Acoustical Society Of America. Acoustical Soc Amer Amer Inst Physics, v. 140, p. 4350 - 4359, 2016.pt_BR
dc.language.isoEnglishpt_BR
dc.description.volume140pt_BR
dc.description.issuenumber6pt_BR
dc.description.firstpage4350pt_BR
dc.description.lastpage4359pt_BR
dc.rightsfechadopt_BR
dc.sourceWOSpt_BR
dc.identifier.issn0001-4966pt_BR
dc.identifier.eissn1520-8524pt_BR
dc.identifier.wosidWOS:000390347900040pt_BR
dc.identifier.doi10.1121/1.4971425pt_BR
dc.identifier.urlhttp://asa.scitation.org/doi/abs/10.1121/1.4971425pt_BR
dc.description.sponsorshipEU [FP7-AAT-2012-RTD-1, 314692]pt_BR
dc.description.sponsorshipAirbuspt_BR
dc.description.sponsorshipFundacao de Amparo a Pesquisa do Estado de Sao Paulo, FAPESP [2013/03413-4]pt_BR
dc.description.sponsorshipScience without Borders program [A073/2013]pt_BR
dc.description.sponsorship1Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.date.available2017-11-13T11:30:51Z-
dc.date.accessioned2017-11-13T11:30:51Z-
dc.description.provenanceMade available in DSpace on 2017-11-13T11:30:51Z (GMT). No. of bitstreams: 1 000390347900040.pdf: 2134250 bytes, checksum: 40d235cd00d76742ca36cdc97dd86aa7 (MD5) Previous issue date: 2016en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/325812-
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