Effects of Leading Edge Protuberances on the Aerodynamic Performance of 2D Cambered Airfoil
The pressure and lift coefficients were measured for airfoils with leading edge protuberances in a subsonic wind tunnel and compared with the performance of a baseline NACA 4415 airfoil with a straight leading edge. These protuberances of 2D airfoil mimic the leading edge configuration of the flippe...
Published in: | Communications - Scientific letters of the University of Zilina |
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Online Access: | https://doi.org/10.26552/com.C.2012.4A.63-67 https://doaj.org/article/b9fdf022bf6043fca997f832249a31d1 |
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ftdoajarticles:oai:doaj.org/article:b9fdf022bf6043fca997f832249a31d1 2023-06-06T11:54:41+02:00 Effects of Leading Edge Protuberances on the Aerodynamic Performance of 2D Cambered Airfoil Abeer Mukhtar Humera Golandaz Young Hwan Kim 2012-12-01T00:00:00Z https://doi.org/10.26552/com.C.2012.4A.63-67 https://doaj.org/article/b9fdf022bf6043fca997f832249a31d1 EN eng University of Žilina https://komunikacie.uniza.sk/artkey/csl-201211-0011_effects-of-leading-edge-protuberances-on-the-aerodynamic-performance-of-2d-cambered-airfoil.php https://doaj.org/toc/1335-4205 https://doaj.org/toc/2585-7878 1335-4205 2585-7878 doi:10.26552/com.C.2012.4A.63-67 https://doaj.org/article/b9fdf022bf6043fca997f832249a31d1 Communications, Vol 14, Iss 4A, Pp 63-67 (2012) no keywords Transportation and communications HE1-9990 Science Q Transportation engineering TA1001-1280 article 2012 ftdoajarticles https://doi.org/10.26552/com.C.2012.4A.63-67 2023-04-16T00:32:16Z The pressure and lift coefficients were measured for airfoils with leading edge protuberances in a subsonic wind tunnel and compared with the performance of a baseline NACA 4415 airfoil with a straight leading edge. These protuberances of 2D airfoil mimic the leading edge configuration of the flippers of a humpback whale. Wavelengths were varied from 25% to 50% of the chord length whilst amplitude was varied from 5% to 12% of the chord length of the baseline. Surface flow visualisation using kaolin was also performed to further analyze the flow patterns and surface swirls and vortices were observed. The presence of protuberances enhanced the stall characteristics of the baseline and low amplitude protuberances exhibited the maximum lift coefficient. However, at low angles of attack, the performance of the modified airfoils is similar to that of the baseline. Article in Journal/Newspaper Humpback Whale Directory of Open Access Journals: DOAJ Articles Communications - Scientific letters of the University of Zilina 14 4A 63 67 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
no keywords Transportation and communications HE1-9990 Science Q Transportation engineering TA1001-1280 |
spellingShingle |
no keywords Transportation and communications HE1-9990 Science Q Transportation engineering TA1001-1280 Abeer Mukhtar Humera Golandaz Young Hwan Kim Effects of Leading Edge Protuberances on the Aerodynamic Performance of 2D Cambered Airfoil |
topic_facet |
no keywords Transportation and communications HE1-9990 Science Q Transportation engineering TA1001-1280 |
description |
The pressure and lift coefficients were measured for airfoils with leading edge protuberances in a subsonic wind tunnel and compared with the performance of a baseline NACA 4415 airfoil with a straight leading edge. These protuberances of 2D airfoil mimic the leading edge configuration of the flippers of a humpback whale. Wavelengths were varied from 25% to 50% of the chord length whilst amplitude was varied from 5% to 12% of the chord length of the baseline. Surface flow visualisation using kaolin was also performed to further analyze the flow patterns and surface swirls and vortices were observed. The presence of protuberances enhanced the stall characteristics of the baseline and low amplitude protuberances exhibited the maximum lift coefficient. However, at low angles of attack, the performance of the modified airfoils is similar to that of the baseline. |
format |
Article in Journal/Newspaper |
author |
Abeer Mukhtar Humera Golandaz Young Hwan Kim |
author_facet |
Abeer Mukhtar Humera Golandaz Young Hwan Kim |
author_sort |
Abeer Mukhtar |
title |
Effects of Leading Edge Protuberances on the Aerodynamic Performance of 2D Cambered Airfoil |
title_short |
Effects of Leading Edge Protuberances on the Aerodynamic Performance of 2D Cambered Airfoil |
title_full |
Effects of Leading Edge Protuberances on the Aerodynamic Performance of 2D Cambered Airfoil |
title_fullStr |
Effects of Leading Edge Protuberances on the Aerodynamic Performance of 2D Cambered Airfoil |
title_full_unstemmed |
Effects of Leading Edge Protuberances on the Aerodynamic Performance of 2D Cambered Airfoil |
title_sort |
effects of leading edge protuberances on the aerodynamic performance of 2d cambered airfoil |
publisher |
University of Žilina |
publishDate |
2012 |
url |
https://doi.org/10.26552/com.C.2012.4A.63-67 https://doaj.org/article/b9fdf022bf6043fca997f832249a31d1 |
genre |
Humpback Whale |
genre_facet |
Humpback Whale |
op_source |
Communications, Vol 14, Iss 4A, Pp 63-67 (2012) |
op_relation |
https://komunikacie.uniza.sk/artkey/csl-201211-0011_effects-of-leading-edge-protuberances-on-the-aerodynamic-performance-of-2d-cambered-airfoil.php https://doaj.org/toc/1335-4205 https://doaj.org/toc/2585-7878 1335-4205 2585-7878 doi:10.26552/com.C.2012.4A.63-67 https://doaj.org/article/b9fdf022bf6043fca997f832249a31d1 |
op_doi |
https://doi.org/10.26552/com.C.2012.4A.63-67 |
container_title |
Communications - Scientific letters of the University of Zilina |
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14 |
container_issue |
4A |
container_start_page |
63 |
op_container_end_page |
67 |
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1767961203024330752 |