Fast acoustic scattering predictions with non-uniform potential flow effects

dc.creatorWolf, WR
dc.creatorLele, SK
dc.date2013
dc.dateNOV
dc.date2014-07-30T17:34:35Z
dc.date2015-11-26T16:45:44Z
dc.date2014-07-30T17:34:35Z
dc.date2015-11-26T16:45:44Z
dc.date.accessioned2018-03-28T23:31:22Z
dc.date.available2018-03-28T23:31:22Z
dc.identifierJournal Of The Brazilian Society Of Mechanical Sciences And Engineering. Abcm Brazilian Soc Mechanical Sciences & Engineering, v. 35, n. 4, n. 407, n. 418, 2013.
dc.identifier1678-5878
dc.identifierWOS:000324128000007
dc.identifier10.1007/s40430-013-0038-6
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/66763
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/66763
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1274306
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionAcoustic scattering simulations with non-uniform potential flow effects are performed by two formulations described in the literature, valid under specific flow conditions. Both formulations require the solution of the Helmholtz equation for the acoustic scattering computation and the solution of the Laplace equation for the steady potential base flow. These equations are solved using the boundary element method (BEM), and the fast multipole method (FMM) is used to accelerate the matrix-vector products arising from the Helmholtz and Laplace BEM equations. An assessment of the solutions obtained by the two formulations is presented for a verification test case where analytical and full unsteady Euler solutions are available. Results of acoustic scattering for large-scale simulations of realistic airframe configurations are presented. Good agreement is found between Taylor's low Mach number scattering formulation and the solution of the full unsteady Euler equations for high-frequency simulations of plane waves scattering from a rigid cylinder. The computational cost per iteration of the FMM-BEM for the acoustic scattering around a full airplane configuration discretized by 550,000 boundary elements in a non-uniform potential flow is 19 s.
dc.description35
dc.description4
dc.description407
dc.description418
dc.descriptionFulbright
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionCAPES [2464055]
dc.languageen
dc.publisherAbcm Brazilian Soc Mechanical Sciences & Engineering
dc.publisherRio De Janeiro Rj
dc.publisherBrasil
dc.relationJournal Of The Brazilian Society Of Mechanical Sciences And Engineering
dc.relationJ. Braz. Soc. Mech. Sci. Eng.
dc.rightsaberto
dc.sourceWeb of Science
dc.subjectAcoustic scattering
dc.subjectNon-uniform flow
dc.subjectFast multipole method
dc.subjectBoundary-element Method
dc.subjectHelmholtz-equation
dc.titleFast acoustic scattering predictions with non-uniform potential flow effects
dc.typeArtículos de revistas


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