Optimal leading-edge deflection for flapping airfoil propulsion
Autor(a) principal: | |
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Data de Publicação: | 2023 |
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/10400.6/13825 |
Resumo: | The aerodynamics of oscillating airfoils are crucial to understanding subjects such as rotor dynamics and bio-inspired flows. Unsteady airfoils have been studied extensively, but there is an overall lack of knowledge regarding newer and more complex kinematics. The present paper builds upon our modified version of the NACA0012 by numerically comparing its way of flapping with the standard flapping that is common in the literature. The comparison is conducted parametrically at a Reynolds number of 104 for two nondimensional amplitudes. Then, using a gradient-based optimization method, we search for pitching amplitudes that maximize the propulsive power and efficiency for both flapping modes. Results indicate that the proposed flapping methodology is more promising than conventional flapping, with thrust increases up to approximately 40%. Furthermore, the proposed mechanism achieves maximum propulsive power with near-optimal efficiency, a common limitation of traditional flapping airfoils. |
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Optimal leading-edge deflection for flapping airfoil propulsionDynamic curvatureFlapping airfoilFlow controlOptimizationPropulsive enhancementBiomimeticsOscillating airfoilEdge deflectionsFlapping airfoilsRotors dynamicsRotors dynamicsOscillating flowThe aerodynamics of oscillating airfoils are crucial to understanding subjects such as rotor dynamics and bio-inspired flows. Unsteady airfoils have been studied extensively, but there is an overall lack of knowledge regarding newer and more complex kinematics. The present paper builds upon our modified version of the NACA0012 by numerically comparing its way of flapping with the standard flapping that is common in the literature. The comparison is conducted parametrically at a Reynolds number of 104 for two nondimensional amplitudes. Then, using a gradient-based optimization method, we search for pitching amplitudes that maximize the propulsive power and efficiency for both flapping modes. Results indicate that the proposed flapping methodology is more promising than conventional flapping, with thrust increases up to approximately 40%. Furthermore, the proposed mechanism achieves maximum propulsive power with near-optimal efficiency, a common limitation of traditional flapping airfoils.Fundação para a Ciência e a Tecnologia e Conselho Nacional de Desenvolvimento Científico e Tecnológico; Brazilian National Council for Scientific and Technological Development [grant number #306824/2019-1]SAGE Publications LtduBibliorumCamacho, E. A. R.Silva, AndréMarques, Flávio D.2023-09-262025-12-01T00:00:00Z2023-09-26T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.6/13825eng0954410010.1177/09544100231201553info: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:RCAAP2023-12-15T09:57:33Zoai:ubibliorum.ubi.pt:10400.6/13825Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:53:10.762445Repositório 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 |
Optimal leading-edge deflection for flapping airfoil propulsion |
title |
Optimal leading-edge deflection for flapping airfoil propulsion |
spellingShingle |
Optimal leading-edge deflection for flapping airfoil propulsion Camacho, E. A. R. Dynamic curvature Flapping airfoil Flow control Optimization Propulsive enhancement Biomimetics Oscillating airfoil Edge deflections Flapping airfoils Rotors dynamics Rotors dynamics Oscillating flow |
title_short |
Optimal leading-edge deflection for flapping airfoil propulsion |
title_full |
Optimal leading-edge deflection for flapping airfoil propulsion |
title_fullStr |
Optimal leading-edge deflection for flapping airfoil propulsion |
title_full_unstemmed |
Optimal leading-edge deflection for flapping airfoil propulsion |
title_sort |
Optimal leading-edge deflection for flapping airfoil propulsion |
author |
Camacho, E. A. R. |
author_facet |
Camacho, E. A. R. Silva, André Marques, Flávio D. |
author_role |
author |
author2 |
Silva, André Marques, Flávio D. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
uBibliorum |
dc.contributor.author.fl_str_mv |
Camacho, E. A. R. Silva, André Marques, Flávio D. |
dc.subject.por.fl_str_mv |
Dynamic curvature Flapping airfoil Flow control Optimization Propulsive enhancement Biomimetics Oscillating airfoil Edge deflections Flapping airfoils Rotors dynamics Rotors dynamics Oscillating flow |
topic |
Dynamic curvature Flapping airfoil Flow control Optimization Propulsive enhancement Biomimetics Oscillating airfoil Edge deflections Flapping airfoils Rotors dynamics Rotors dynamics Oscillating flow |
description |
The aerodynamics of oscillating airfoils are crucial to understanding subjects such as rotor dynamics and bio-inspired flows. Unsteady airfoils have been studied extensively, but there is an overall lack of knowledge regarding newer and more complex kinematics. The present paper builds upon our modified version of the NACA0012 by numerically comparing its way of flapping with the standard flapping that is common in the literature. The comparison is conducted parametrically at a Reynolds number of 104 for two nondimensional amplitudes. Then, using a gradient-based optimization method, we search for pitching amplitudes that maximize the propulsive power and efficiency for both flapping modes. Results indicate that the proposed flapping methodology is more promising than conventional flapping, with thrust increases up to approximately 40%. Furthermore, the proposed mechanism achieves maximum propulsive power with near-optimal efficiency, a common limitation of traditional flapping airfoils. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-09-26 2023-09-26T00:00:00Z 2025-12-01T00:00:00Z |
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/10400.6/13825 |
url |
http://hdl.handle.net/10400.6/13825 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
09544100 10.1177/09544100231201553 |
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 |
SAGE Publications Ltd |
publisher.none.fl_str_mv |
SAGE Publications Ltd |
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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1799136420036608000 |