Wavepackets in Boundary Layers Close to Transonic Speeds

Detalhes bibliográficos
Autor(a) principal: Martínez, Andrés G.
Data de Publicação: 2015
Outros Autores: Gennaro, Elmer M. [UNESP], Medeiros, Marcello A.F.
Tipo de documento: Artigo de conferência
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.piutam.2015.03.063
http://hdl.handle.net/11449/167983
Resumo: In practical situations, natural transition determines the transition to turbulence process. Experimental evidence suggest that the wave packet evolution is related closely to natural transition. The major part of numerical works on wave packets are focused on incompressible, supersonic and hypersonoc flows, subsonic ones are probably the less researched. A compressible DNS code was developed, several code validation tests were performed, including a simulation of an experiment of wave packets 1. The evolution of wave packets on compressible boundary layer in a flat plate is studied by Direct Numerical Simulations (DNS), to investigate the effect of Mach number in the initial nonlinear stages. For Mach 0.9 were considered three cases: linear, nonlinear and interaction between two packets. Results suggest that subharmonic mechanism is the most probable scenario at the initial nonlinear stages.
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spelling Wavepackets in Boundary Layers Close to Transonic SpeedsCompressible boundary layerDNS simulationnatural transitionsubsonic boundary layerwave packetIn practical situations, natural transition determines the transition to turbulence process. Experimental evidence suggest that the wave packet evolution is related closely to natural transition. The major part of numerical works on wave packets are focused on incompressible, supersonic and hypersonoc flows, subsonic ones are probably the less researched. A compressible DNS code was developed, several code validation tests were performed, including a simulation of an experiment of wave packets 1. The evolution of wave packets on compressible boundary layer in a flat plate is studied by Direct Numerical Simulations (DNS), to investigate the effect of Mach number in the initial nonlinear stages. For Mach 0.9 were considered three cases: linear, nonlinear and interaction between two packets. Results suggest that subharmonic mechanism is the most probable scenario at the initial nonlinear stages.Universidade de São Paulo, Departamento de Engenharia Aeronautica, Av. João Dagnone, 1100Universidade Estadual Paulista (UNESP), Câmpus de Sãao João da Boa Vista - SPUniversidade Estadual Paulista (UNESP), Câmpus de Sãao João da Boa Vista - SPUniversidade de São Paulo (USP)Universidade Estadual Paulista (Unesp)Martínez, Andrés G.Gennaro, Elmer M. [UNESP]Medeiros, Marcello A.F.2018-12-11T16:39:07Z2018-12-11T16:39:07Z2015-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject374-380http://dx.doi.org/10.1016/j.piutam.2015.03.063Procedia IUTAM, v. 14, p. 374-380.2210-9838http://hdl.handle.net/11449/16798310.1016/j.piutam.2015.03.0632-s2.0-84940656168Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengProcedia IUTAM0,254info:eu-repo/semantics/openAccess2021-10-23T21:44:31Zoai:repositorio.unesp.br:11449/167983Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T21:44:31Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Wavepackets in Boundary Layers Close to Transonic Speeds
title Wavepackets in Boundary Layers Close to Transonic Speeds
spellingShingle Wavepackets in Boundary Layers Close to Transonic Speeds
Martínez, Andrés G.
Compressible boundary layer
DNS simulation
natural transition
subsonic boundary layer
wave packet
title_short Wavepackets in Boundary Layers Close to Transonic Speeds
title_full Wavepackets in Boundary Layers Close to Transonic Speeds
title_fullStr Wavepackets in Boundary Layers Close to Transonic Speeds
title_full_unstemmed Wavepackets in Boundary Layers Close to Transonic Speeds
title_sort Wavepackets in Boundary Layers Close to Transonic Speeds
author Martínez, Andrés G.
author_facet Martínez, Andrés G.
Gennaro, Elmer M. [UNESP]
Medeiros, Marcello A.F.
author_role author
author2 Gennaro, Elmer M. [UNESP]
Medeiros, Marcello A.F.
author2_role author
author
dc.contributor.none.fl_str_mv Universidade de São Paulo (USP)
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Martínez, Andrés G.
Gennaro, Elmer M. [UNESP]
Medeiros, Marcello A.F.
dc.subject.por.fl_str_mv Compressible boundary layer
DNS simulation
natural transition
subsonic boundary layer
wave packet
topic Compressible boundary layer
DNS simulation
natural transition
subsonic boundary layer
wave packet
description In practical situations, natural transition determines the transition to turbulence process. Experimental evidence suggest that the wave packet evolution is related closely to natural transition. The major part of numerical works on wave packets are focused on incompressible, supersonic and hypersonoc flows, subsonic ones are probably the less researched. A compressible DNS code was developed, several code validation tests were performed, including a simulation of an experiment of wave packets 1. The evolution of wave packets on compressible boundary layer in a flat plate is studied by Direct Numerical Simulations (DNS), to investigate the effect of Mach number in the initial nonlinear stages. For Mach 0.9 were considered three cases: linear, nonlinear and interaction between two packets. Results suggest that subharmonic mechanism is the most probable scenario at the initial nonlinear stages.
publishDate 2015
dc.date.none.fl_str_mv 2015-01-01
2018-12-11T16:39:07Z
2018-12-11T16:39:07Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1016/j.piutam.2015.03.063
Procedia IUTAM, v. 14, p. 374-380.
2210-9838
http://hdl.handle.net/11449/167983
10.1016/j.piutam.2015.03.063
2-s2.0-84940656168
url http://dx.doi.org/10.1016/j.piutam.2015.03.063
http://hdl.handle.net/11449/167983
identifier_str_mv Procedia IUTAM, v. 14, p. 374-380.
2210-9838
10.1016/j.piutam.2015.03.063
2-s2.0-84940656168
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Procedia IUTAM
0,254
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 374-380
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1799964876112658432

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