Aerodynamics and percolation: unfolding laminar separation bubble on Airfoils
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10071/15678 |
Resumo: | As a fundamental phenomenon of fluid mechanics, recent studies suggested laminar-turbulent transition belonging to the universality class of directed percolation. Here, the onset of a laminar separation bubble on an airfoil is analyzed in terms of the directed percolation model using particle image velocimetry data. Our findings indicate a clear significance of percolation models in a general flow situation beyond fundamental ones. We show that our results are robust against fluctuations of the parameter, namely, the threshold of turbulence intensity, that maps velocimetry data into binary cells (turbulent or laminar). In particular, this percolation approach enables the precise determination of the transition point of the laminar separation bubble, an important problem in aerodynamics. |
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Aerodynamics and percolation: unfolding laminar separation bubble on AirfoilsAs a fundamental phenomenon of fluid mechanics, recent studies suggested laminar-turbulent transition belonging to the universality class of directed percolation. Here, the onset of a laminar separation bubble on an airfoil is analyzed in terms of the directed percolation model using particle image velocimetry data. Our findings indicate a clear significance of percolation models in a general flow situation beyond fundamental ones. We show that our results are robust against fluctuations of the parameter, namely, the threshold of turbulence intensity, that maps velocimetry data into binary cells (turbulent or laminar). In particular, this percolation approach enables the precise determination of the transition point of the laminar separation bubble, an important problem in aerodynamics.American Physical Society2018-04-23T10:25:20Z2018-01-01T00:00:00Z20182019-03-08T10:48:39Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10071/15678eng2160-330810.1103/PhysRevX.8.021015Traphan, D.Wester, T. T. B.Gülker, G.Peinke, J.Lind, P. G.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-09T17:42:21Zoai:repositorio.iscte-iul.pt:10071/15678Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T22:19:48.187612Repositório 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 |
Aerodynamics and percolation: unfolding laminar separation bubble on Airfoils |
title |
Aerodynamics and percolation: unfolding laminar separation bubble on Airfoils |
spellingShingle |
Aerodynamics and percolation: unfolding laminar separation bubble on Airfoils Traphan, D. |
title_short |
Aerodynamics and percolation: unfolding laminar separation bubble on Airfoils |
title_full |
Aerodynamics and percolation: unfolding laminar separation bubble on Airfoils |
title_fullStr |
Aerodynamics and percolation: unfolding laminar separation bubble on Airfoils |
title_full_unstemmed |
Aerodynamics and percolation: unfolding laminar separation bubble on Airfoils |
title_sort |
Aerodynamics and percolation: unfolding laminar separation bubble on Airfoils |
author |
Traphan, D. |
author_facet |
Traphan, D. Wester, T. T. B. Gülker, G. Peinke, J. Lind, P. G. |
author_role |
author |
author2 |
Wester, T. T. B. Gülker, G. Peinke, J. Lind, P. G. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Traphan, D. Wester, T. T. B. Gülker, G. Peinke, J. Lind, P. G. |
description |
As a fundamental phenomenon of fluid mechanics, recent studies suggested laminar-turbulent transition belonging to the universality class of directed percolation. Here, the onset of a laminar separation bubble on an airfoil is analyzed in terms of the directed percolation model using particle image velocimetry data. Our findings indicate a clear significance of percolation models in a general flow situation beyond fundamental ones. We show that our results are robust against fluctuations of the parameter, namely, the threshold of turbulence intensity, that maps velocimetry data into binary cells (turbulent or laminar). In particular, this percolation approach enables the precise determination of the transition point of the laminar separation bubble, an important problem in aerodynamics. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-04-23T10:25:20Z 2018-01-01T00:00:00Z 2018 2019-03-08T10:48:39Z |
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/10071/15678 |
url |
http://hdl.handle.net/10071/15678 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2160-3308 10.1103/PhysRevX.8.021015 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
American Physical Society |
publisher.none.fl_str_mv |
American Physical Society |
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 |
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1799134757741658112 |