Unsteadiness of a Ground Vortex Flow

Detalhes bibliográficos
Autor(a) principal: Silva, André
Data de Publicação: 2012
Outros Autores: Barata, Jorge M M, Santos, Pedro J. T. C, Nunes, Ricardo F., Durão, Diamantino
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.6/12197
Resumo: The impact zone of a wall jet with a boundary layer is studied computationally using a Reynolds averaged Navier-Stokes (RANS) approach with the "κ-ε" turbulence model. The computational domain corresponds to complete experimental rig and the measured boundary conditions were used. It was found that the gross features of the flow are well predicted, and the fluctuations of the flowfield around the ground vortex occur in a very small region near the wall where the impact between each flow occurs. The computational results showed a cyclic formation of two small secondary vortexes that appear and disappear cyclically around the separation and maximum penetration points of the ground vortex.
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spelling Unsteadiness of a Ground Vortex FlowVortex FlowBoundary Layer ThicknessReynolds Averaged Navier StokesHot Gas IngestionTurbulence ModelsNumerical ModelingEddy ViscosityNormal StressAircraft FuselagesPropulsion SystemThe impact zone of a wall jet with a boundary layer is studied computationally using a Reynolds averaged Navier-Stokes (RANS) approach with the "κ-ε" turbulence model. The computational domain corresponds to complete experimental rig and the measured boundary conditions were used. It was found that the gross features of the flow are well predicted, and the fluctuations of the flowfield around the ground vortex occur in a very small region near the wall where the impact between each flow occurs. The computational results showed a cyclic formation of two small secondary vortexes that appear and disappear cyclically around the separation and maximum penetration points of the ground vortex.Fundação para a Ciência e a TecnologiaAmerican Institute of Aeronautics and Astronautics IncuBibliorumSilva, AndréBarata, Jorge M MSantos, Pedro J. T. CNunes, Ricardo F.Durão, Diamantino2012-06-152060-06-15T00:00:00Z2012-06-15T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.6/12197engSilva, A.R.R., Barata, J.M.M., Nunes, R.F., Santos, P. Unsteadiness of Ground Vortex Flow 47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition, Orlando, Florida, EUA, 5-8 janeiro, 2009 DOI: 10.2514/6.2009-407978-1-60086-973-010.2514/6.2009-407info: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:RCAAP2023-12-15T09:55:13Zoai:ubibliorum.ubi.pt:10400.6/12197Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:51:51.574767Repositório 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 Unsteadiness of a Ground Vortex Flow
title Unsteadiness of a Ground Vortex Flow
spellingShingle Unsteadiness of a Ground Vortex Flow
Silva, André
Vortex Flow
Boundary Layer Thickness
Reynolds Averaged Navier Stokes
Hot Gas Ingestion
Turbulence Models
Numerical Modeling
Eddy Viscosity
Normal Stress
Aircraft Fuselages
Propulsion System
title_short Unsteadiness of a Ground Vortex Flow
title_full Unsteadiness of a Ground Vortex Flow
title_fullStr Unsteadiness of a Ground Vortex Flow
title_full_unstemmed Unsteadiness of a Ground Vortex Flow
title_sort Unsteadiness of a Ground Vortex Flow
author Silva, André
author_facet Silva, André
Barata, Jorge M M
Santos, Pedro J. T. C
Nunes, Ricardo F.
Durão, Diamantino
author_role author
author2 Barata, Jorge M M
Santos, Pedro J. T. C
Nunes, Ricardo F.
Durão, Diamantino
author2_role author
author
author
author
dc.contributor.none.fl_str_mv uBibliorum
dc.contributor.author.fl_str_mv Silva, André
Barata, Jorge M M
Santos, Pedro J. T. C
Nunes, Ricardo F.
Durão, Diamantino
dc.subject.por.fl_str_mv Vortex Flow
Boundary Layer Thickness
Reynolds Averaged Navier Stokes
Hot Gas Ingestion
Turbulence Models
Numerical Modeling
Eddy Viscosity
Normal Stress
Aircraft Fuselages
Propulsion System
topic Vortex Flow
Boundary Layer Thickness
Reynolds Averaged Navier Stokes
Hot Gas Ingestion
Turbulence Models
Numerical Modeling
Eddy Viscosity
Normal Stress
Aircraft Fuselages
Propulsion System
description The impact zone of a wall jet with a boundary layer is studied computationally using a Reynolds averaged Navier-Stokes (RANS) approach with the "κ-ε" turbulence model. The computational domain corresponds to complete experimental rig and the measured boundary conditions were used. It was found that the gross features of the flow are well predicted, and the fluctuations of the flowfield around the ground vortex occur in a very small region near the wall where the impact between each flow occurs. The computational results showed a cyclic formation of two small secondary vortexes that appear and disappear cyclically around the separation and maximum penetration points of the ground vortex.
publishDate 2012
dc.date.none.fl_str_mv 2012-06-15
2012-06-15T00:00:00Z
2060-06-15T00:00:00Z
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/10400.6/12197
url http://hdl.handle.net/10400.6/12197
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Silva, A.R.R., Barata, J.M.M., Nunes, R.F., Santos, P. Unsteadiness of Ground Vortex Flow 47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition, Orlando, Florida, EUA, 5-8 janeiro, 2009 DOI: 10.2514/6.2009-407
978-1-60086-973-0
10.2514/6.2009-407
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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