Mohammed Aldheeb, Mohammed Abdulmalek and Asrar, Waqar and Omar, Ashraf Ali and Altaf, Afaq and Sulaeman, Erwin (2020) Effect of a directionally porous wing tip on tip vortex. Journal of Applied Fluid Mechanics, 13 (2). pp. 651-665. ISSN 1735-3572 E-ISSN 1735-3645
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Abstract
This paper presents an experimental study of the effect of a directionally porous wing tip on the tip vortex using particle image velocimetry (PIV) on a half wing model with NACA 653218 as its airfoil section. Four different configurations of the directionally porous wing tip are tested. The vortex generated by the wing tips are examined at four different measuring planes downstream perpendicular to the flow axis. The flow field over the porous wing tip surface along the streamwise direction is obtained as well to understand the effects of the porosity on the flow which in the end affects the vortex downstream. Furthermore, the aerodynamic performance of all different configurations is compared to study their effects on the aerodynamic coefficients of the wing. The results show a high reduction in vorticity, up to 90%; tangential velocity reduction up to 67% and a significant reduction in vortex circulation in the near-far field. Effect on the lift to drag ratio is up to 20 %.
| Item Type: | Article (Journal) |
|---|---|
| Additional Information: | 9062/76419 |
| Uncontrolled Keywords: | Porosity; Porous wing tip; Wing tip; Aerodynamics; PIV |
| Subjects: | T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL500 Aeronautics |
| Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): | Kulliyyah of Engineering Kulliyyah of Engineering > Department of Mechanical Engineering |
| Depositing User: | Dr Mohammed Aldheeb |
| Date Deposited: | 09 Dec 2019 14:53 |
| Last Modified: | 11 Nov 2020 16:40 |
| URI: | http://irep.iium.edu.my/id/eprint/76419 |
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