Experimental Study of a Ground Vortex: the Effect of the Crossflow Velocity

Detalhes bibliográficos
Autor(a) principal: Barata, Jorge M M
Data de Publicação: 2012
Outros Autores: Bernardo, Nuno, Santos, Pedro José da Costa Teixeira, Silva, André
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.6/12211
Resumo: Laser-Doppler measurements of the velocity characteristics of a ground vortex flow resulting from the collision of a wall jet with a boundary layer are presented and discussed together with flow visualization. In the present study velocity ratios between the boundary layer and the wall jet of 0.5 and 0.62 were considered. Two secondary vortices were found upstream the separation point for the highest velocity ratio. The angle of deflection of the upwash flow was found to decrease with the velocity ratio, while the wall jet penetration increases.
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spelling Experimental Study of a Ground Vortex: the Effect of the Crossflow VelocityVortex FlowBoundary LayersFlow VisualizationUpwashNormal StressWind TunnelsRadial FlowVelocity ProfilesHistogramsJet NozzleLaser-Doppler measurements of the velocity characteristics of a ground vortex flow resulting from the collision of a wall jet with a boundary layer are presented and discussed together with flow visualization. In the present study velocity ratios between the boundary layer and the wall jet of 0.5 and 0.62 were considered. Two secondary vortices were found upstream the separation point for the highest velocity ratio. The angle of deflection of the upwash flow was found to decrease with the velocity ratio, while the wall jet penetration increases.Fundação para a Ciência e a TecnologiaAmerican Institute of Aeronautics and Astronautics IncuBibliorumBarata, Jorge M MBernardo, NunoSantos, Pedro José da Costa TeixeiraSilva, André2012-06-142060-06-12T00:00:00Z2012-06-14T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.6/12211engBarata, J.M.M., Bernardo, N., Santos, P.J.C.T., Silva, A.R.R. Experimental Study of a Ground Vortex: the Effect of the Crossflow Velocity 49th Aerospace Sciences Meeting, Orlando, FL, EUA, 4-7 janeiro, 2011 DOI: 10.2514/6.2011-1052978-1-60086-950-110.2514/6.2011-1052info:eu-repo/semantics/embargoedAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-12-15T09:55:16Zoai:ubibliorum.ubi.pt:10400.6/12211Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:51:52.292871Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Experimental Study of a Ground Vortex: the Effect of the Crossflow Velocity
title Experimental Study of a Ground Vortex: the Effect of the Crossflow Velocity
spellingShingle Experimental Study of a Ground Vortex: the Effect of the Crossflow Velocity
Barata, Jorge M M
Vortex Flow
Boundary Layers
Flow Visualization
Upwash
Normal Stress
Wind Tunnels
Radial Flow
Velocity Profiles
Histograms
Jet Nozzle
title_short Experimental Study of a Ground Vortex: the Effect of the Crossflow Velocity
title_full Experimental Study of a Ground Vortex: the Effect of the Crossflow Velocity
title_fullStr Experimental Study of a Ground Vortex: the Effect of the Crossflow Velocity
title_full_unstemmed Experimental Study of a Ground Vortex: the Effect of the Crossflow Velocity
title_sort Experimental Study of a Ground Vortex: the Effect of the Crossflow Velocity
author Barata, Jorge M M
author_facet Barata, Jorge M M
Bernardo, Nuno
Santos, Pedro José da Costa Teixeira
Silva, André
author_role author
author2 Bernardo, Nuno
Santos, Pedro José da Costa Teixeira
Silva, André
author2_role author
author
author
dc.contributor.none.fl_str_mv uBibliorum
dc.contributor.author.fl_str_mv Barata, Jorge M M
Bernardo, Nuno
Santos, Pedro José da Costa Teixeira
Silva, André
dc.subject.por.fl_str_mv Vortex Flow
Boundary Layers
Flow Visualization
Upwash
Normal Stress
Wind Tunnels
Radial Flow
Velocity Profiles
Histograms
Jet Nozzle
topic Vortex Flow
Boundary Layers
Flow Visualization
Upwash
Normal Stress
Wind Tunnels
Radial Flow
Velocity Profiles
Histograms
Jet Nozzle
description Laser-Doppler measurements of the velocity characteristics of a ground vortex flow resulting from the collision of a wall jet with a boundary layer are presented and discussed together with flow visualization. In the present study velocity ratios between the boundary layer and the wall jet of 0.5 and 0.62 were considered. Two secondary vortices were found upstream the separation point for the highest velocity ratio. The angle of deflection of the upwash flow was found to decrease with the velocity ratio, while the wall jet penetration increases.
publishDate 2012
dc.date.none.fl_str_mv 2012-06-14
2012-06-14T00:00:00Z
2060-06-12T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.6/12211
url http://hdl.handle.net/10400.6/12211
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Barata, J.M.M., Bernardo, N., Santos, P.J.C.T., Silva, A.R.R. Experimental Study of a Ground Vortex: the Effect of the Crossflow Velocity 49th Aerospace Sciences Meeting, Orlando, FL, EUA, 4-7 janeiro, 2011 DOI: 10.2514/6.2011-1052
978-1-60086-950-1
10.2514/6.2011-1052
dc.rights.driver.fl_str_mv info:eu-repo/semantics/embargoedAccess
eu_rights_str_mv embargoedAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Institute of Aeronautics and Astronautics Inc
publisher.none.fl_str_mv American Institute of Aeronautics and Astronautics Inc
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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