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...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
University of Žilina
2012-12-01
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| Series: | Communications |
| Subjects: | |
| Online Access: | https://komunikacie.uniza.sk/artkey/csl-201211-0011_effects-of-leading-edge-protuberances-on-the-aerodynamic-performance-of-2d-cambered-airfoil.php |
| _version_ | 1797846984192688128 |
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| author | Abeer Mukhtar Humera Golandaz Young Hwan Kim |
| author_facet | Abeer Mukhtar Humera Golandaz Young Hwan Kim |
| author_sort | Abeer Mukhtar |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-04-09T18:03:46Z |
| format | Article |
| id | doaj.art-b9fdf022bf6043fca997f832249a31d1 |
| institution | Directory Open Access Journal |
| issn | 1335-4205 2585-7878 |
| language | English |
| last_indexed | 2024-04-09T18:03:46Z |
| publishDate | 2012-12-01 |
| publisher | University of Žilina |
| record_format | Article |
| series | Communications |
| spelling | doaj.art-b9fdf022bf6043fca997f832249a31d12023-04-14T06:30:38ZengUniversity of ŽilinaCommunications1335-42052585-78782012-12-01144A636710.26552/com.C.2012.4A.63-67csl-201211-0011Effects of Leading Edge Protuberances on the Aerodynamic Performance of 2D Cambered AirfoilAbeer Mukhtar0Humera Golandaz1Young Hwan Kim2Emirates Aviation College, Dubai, United Arab EmiratesEmirates Aviation College, Dubai, United Arab EmiratesEmirates Aviation College, Dubai, United Arab EmiratesThe 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.https://komunikacie.uniza.sk/artkey/csl-201211-0011_effects-of-leading-edge-protuberances-on-the-aerodynamic-performance-of-2d-cambered-airfoil.phpno keywords |
| spellingShingle | Abeer Mukhtar Humera Golandaz Young Hwan Kim Effects of Leading Edge Protuberances on the Aerodynamic Performance of 2D Cambered Airfoil Communications no keywords |
| title | 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_short | 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 |
| topic | no keywords |
| url | https://komunikacie.uniza.sk/artkey/csl-201211-0011_effects-of-leading-edge-protuberances-on-the-aerodynamic-performance-of-2d-cambered-airfoil.php |
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