On the Role of Leading-Edge Bumps in the Control of Stall Onset in Axial Fan Blades
Taking a lead from the humpback whale flukes, characterized by a series of bumps that result in a sinusoidal-like leading edge, this paper reports on a three-dimensional numerical study of sinusoidal leading edges on cambered airfoil profiles. The turbulent flow around the cambered airfoil with the...
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Online Access: | http://hdl.handle.net/11573/559972 https://doi.org/10.1115/1.4024115 |
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ftunivromairis:oai:iris.uniroma1.it:11573/559972 2024-02-04T10:01:04+01:00 On the Role of Leading-Edge Bumps in the Control of Stall Onset in Axial Fan Blades CORSINI, Alessandro DELIBRA, GIOVANNI Anthony G. Sheard Corsini, Alessandro Delibra, Giovanni Anthony G., Sheard 2013 STAMPA http://hdl.handle.net/11573/559972 https://doi.org/10.1115/1.4024115 eng eng ASME info:eu-repo/semantics/altIdentifier/wos/WOS:000326104800004 volume:135 issue:8 firstpage:081104 numberofpages:9 journal:JOURNAL OF FLUIDS ENGINEERING http://hdl.handle.net/11573/559972 doi:10.1115/1.4024115 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84888324333 biomimesi leading edge bump lift control openfoam info:eu-repo/semantics/article 2013 ftunivromairis https://doi.org/10.1115/1.4024115 2024-01-10T18:02:06Z Taking a lead from the humpback whale flukes, characterized by a series of bumps that result in a sinusoidal-like leading edge, this paper reports on a three-dimensional numerical study of sinusoidal leading edges on cambered airfoil profiles. The turbulent flow around the cambered airfoil with the sinusoidal leading edge was computed at different angles of attack with the open source solver OpenFOAM, using two different eddy viscosity models integrated to the wall. The reported research focused on the effects of the modified leading edge in terms of lift-to-drag performance and the influence of camber on such parameters. For these reasons a comparison with a symmetric airfoil is provided. The research was primarily concerned with the elucidation of the fluid flow mechanisms induced by the bumps and the impact of those mechanisms on airfoil performance, on both symmetric and cambered profiles. The bumps on the leading edge influenced the aerodynamic performance of the airfoil, and the lift curves were found to feature an early recovery in post-stall for the symmetric profile with an additional gain in lift for the cambered profile. The bumps drove the fluid dynamic on the suction side of the airfoil, which in turn resulted in the capability to control the separation at the trailing edge in coincidence with the peak of the sinusoid at the leading edge. Article in Journal/Newspaper Humpback Whale Sapienza Università di Roma: CINECA IRIS Camber ENVELOPE(-63.300,-63.300,-64.680,-64.680) Journal of Fluids Engineering 135 8 |
institution |
Open Polar |
collection |
Sapienza Università di Roma: CINECA IRIS |
op_collection_id |
ftunivromairis |
language |
English |
topic |
biomimesi leading edge bump lift control openfoam |
spellingShingle |
biomimesi leading edge bump lift control openfoam CORSINI, Alessandro DELIBRA, GIOVANNI Anthony G. Sheard On the Role of Leading-Edge Bumps in the Control of Stall Onset in Axial Fan Blades |
topic_facet |
biomimesi leading edge bump lift control openfoam |
description |
Taking a lead from the humpback whale flukes, characterized by a series of bumps that result in a sinusoidal-like leading edge, this paper reports on a three-dimensional numerical study of sinusoidal leading edges on cambered airfoil profiles. The turbulent flow around the cambered airfoil with the sinusoidal leading edge was computed at different angles of attack with the open source solver OpenFOAM, using two different eddy viscosity models integrated to the wall. The reported research focused on the effects of the modified leading edge in terms of lift-to-drag performance and the influence of camber on such parameters. For these reasons a comparison with a symmetric airfoil is provided. The research was primarily concerned with the elucidation of the fluid flow mechanisms induced by the bumps and the impact of those mechanisms on airfoil performance, on both symmetric and cambered profiles. The bumps on the leading edge influenced the aerodynamic performance of the airfoil, and the lift curves were found to feature an early recovery in post-stall for the symmetric profile with an additional gain in lift for the cambered profile. The bumps drove the fluid dynamic on the suction side of the airfoil, which in turn resulted in the capability to control the separation at the trailing edge in coincidence with the peak of the sinusoid at the leading edge. |
author2 |
Corsini, Alessandro Delibra, Giovanni Anthony G., Sheard |
format |
Article in Journal/Newspaper |
author |
CORSINI, Alessandro DELIBRA, GIOVANNI Anthony G. Sheard |
author_facet |
CORSINI, Alessandro DELIBRA, GIOVANNI Anthony G. Sheard |
author_sort |
CORSINI, Alessandro |
title |
On the Role of Leading-Edge Bumps in the Control of Stall Onset in Axial Fan Blades |
title_short |
On the Role of Leading-Edge Bumps in the Control of Stall Onset in Axial Fan Blades |
title_full |
On the Role of Leading-Edge Bumps in the Control of Stall Onset in Axial Fan Blades |
title_fullStr |
On the Role of Leading-Edge Bumps in the Control of Stall Onset in Axial Fan Blades |
title_full_unstemmed |
On the Role of Leading-Edge Bumps in the Control of Stall Onset in Axial Fan Blades |
title_sort |
on the role of leading-edge bumps in the control of stall onset in axial fan blades |
publisher |
ASME |
publishDate |
2013 |
url |
http://hdl.handle.net/11573/559972 https://doi.org/10.1115/1.4024115 |
long_lat |
ENVELOPE(-63.300,-63.300,-64.680,-64.680) |
geographic |
Camber |
geographic_facet |
Camber |
genre |
Humpback Whale |
genre_facet |
Humpback Whale |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000326104800004 volume:135 issue:8 firstpage:081104 numberofpages:9 journal:JOURNAL OF FLUIDS ENGINEERING http://hdl.handle.net/11573/559972 doi:10.1115/1.4024115 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84888324333 |
op_doi |
https://doi.org/10.1115/1.4024115 |
container_title |
Journal of Fluids Engineering |
container_volume |
135 |
container_issue |
8 |
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1789966718439784448 |