Flow over a Wing with Leading-Edge Undulations
International audience The stall-delaying properties of the humpback whale flipper have been observed and quantified in recent years, through both experimental and numerical studies. In the present work we report numerical simulations of an infinite span wing with an idealised representation of this...
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Online Access: | https://hal.science/hal-01069899 https://hal.science/hal-01069899/document https://hal.science/hal-01069899/file/aiaa_note.pdf https://doi.org/10.2514/1.J053142 |
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ftunivaixmarseil:oai:HAL:hal-01069899v1 2023-11-12T04:18:19+01:00 Flow over a Wing with Leading-Edge Undulations Skillen, Alex Revell, Alistair Pinelli, Alfredo Piomelli, Ugo Favier, Julien School of Mechanical Aerospace and Civil Engineering Manchester (MACE) University of Manchester Manchester School of Engineering and Mathematical Sciences City University London Dept. of Mechanical and Materials Engineering Queen's University Kingston, Canada Laboratoire de Mécanique, Modélisation et Procédés Propres (M2P2) Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Centre National de la Recherche Scientifique (CNRS) 2014 https://hal.science/hal-01069899 https://hal.science/hal-01069899/document https://hal.science/hal-01069899/file/aiaa_note.pdf https://doi.org/10.2514/1.J053142 en eng HAL CCSD American Institute of Aeronautics and Astronautics info:eu-repo/semantics/altIdentifier/doi/10.2514/1.J053142 hal-01069899 https://hal.science/hal-01069899 https://hal.science/hal-01069899/document https://hal.science/hal-01069899/file/aiaa_note.pdf doi:10.2514/1.J053142 info:eu-repo/semantics/OpenAccess ISSN: 0001-1452 EISSN: 1533-385X AIAA Journal https://hal.science/hal-01069899 AIAA Journal, 2014, 53 (2), pp.464-472. ⟨10.2514/1.J053142⟩ Flow control leading edge bumps whale LES [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] info:eu-repo/semantics/article Journal articles 2014 ftunivaixmarseil https://doi.org/10.2514/1.J053142 2023-10-31T23:40:32Z International audience The stall-delaying properties of the humpback whale flipper have been observed and quantified in recent years, through both experimental and numerical studies. In the present work we report numerical simulations of an infinite span wing with an idealised representation of this geometry, at a Reynolds number of 1.2 × 105 . Us- ing Large Eddy Simulation, we first establish an adequate spatial resolution before also examining the spanwise extent of the domain. We then proceed to analyse these results to provide an explanation of the conditions that drive the lift observed be- yond the conventional stall angle. The undulating leading-edge geometry gives rise to a span-wise pressure gradient that drives a secondary flow towards the regions of minimum chord. In turn, this leads to the entrainment of higher-momentum fluid into the region behind the maximum chord, which energises the boundary layer and delays stall. Aside from demonstrating a significant post-stall lift, the undulations also have the added benefit of substantially reducing lift fluctuations. Article in Journal/Newspaper Humpback Whale Aix-Marseille Université: HAL AIAA Journal 53 2 464 472 |
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Open Polar |
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Aix-Marseille Université: HAL |
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ftunivaixmarseil |
language |
English |
topic |
Flow control leading edge bumps whale LES [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] |
spellingShingle |
Flow control leading edge bumps whale LES [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] Skillen, Alex Revell, Alistair Pinelli, Alfredo Piomelli, Ugo Favier, Julien Flow over a Wing with Leading-Edge Undulations |
topic_facet |
Flow control leading edge bumps whale LES [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] |
description |
International audience The stall-delaying properties of the humpback whale flipper have been observed and quantified in recent years, through both experimental and numerical studies. In the present work we report numerical simulations of an infinite span wing with an idealised representation of this geometry, at a Reynolds number of 1.2 × 105 . Us- ing Large Eddy Simulation, we first establish an adequate spatial resolution before also examining the spanwise extent of the domain. We then proceed to analyse these results to provide an explanation of the conditions that drive the lift observed be- yond the conventional stall angle. The undulating leading-edge geometry gives rise to a span-wise pressure gradient that drives a secondary flow towards the regions of minimum chord. In turn, this leads to the entrainment of higher-momentum fluid into the region behind the maximum chord, which energises the boundary layer and delays stall. Aside from demonstrating a significant post-stall lift, the undulations also have the added benefit of substantially reducing lift fluctuations. |
author2 |
School of Mechanical Aerospace and Civil Engineering Manchester (MACE) University of Manchester Manchester School of Engineering and Mathematical Sciences City University London Dept. of Mechanical and Materials Engineering Queen's University Kingston, Canada Laboratoire de Mécanique, Modélisation et Procédés Propres (M2P2) Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Skillen, Alex Revell, Alistair Pinelli, Alfredo Piomelli, Ugo Favier, Julien |
author_facet |
Skillen, Alex Revell, Alistair Pinelli, Alfredo Piomelli, Ugo Favier, Julien |
author_sort |
Skillen, Alex |
title |
Flow over a Wing with Leading-Edge Undulations |
title_short |
Flow over a Wing with Leading-Edge Undulations |
title_full |
Flow over a Wing with Leading-Edge Undulations |
title_fullStr |
Flow over a Wing with Leading-Edge Undulations |
title_full_unstemmed |
Flow over a Wing with Leading-Edge Undulations |
title_sort |
flow over a wing with leading-edge undulations |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.science/hal-01069899 https://hal.science/hal-01069899/document https://hal.science/hal-01069899/file/aiaa_note.pdf https://doi.org/10.2514/1.J053142 |
genre |
Humpback Whale |
genre_facet |
Humpback Whale |
op_source |
ISSN: 0001-1452 EISSN: 1533-385X AIAA Journal https://hal.science/hal-01069899 AIAA Journal, 2014, 53 (2), pp.464-472. ⟨10.2514/1.J053142⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.2514/1.J053142 hal-01069899 https://hal.science/hal-01069899 https://hal.science/hal-01069899/document https://hal.science/hal-01069899/file/aiaa_note.pdf doi:10.2514/1.J053142 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.2514/1.J053142 |
container_title |
AIAA Journal |
container_volume |
53 |
container_issue |
2 |
container_start_page |
464 |
op_container_end_page |
472 |
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1782334971086635008 |