Hadi, Muhammad Irfan and Nazri, Mohd. and Abdullah, Aslam (2020) Vortex formation in unsteady flow over NACA 4412 and NACA 4424 airfoils. ARPN Journal of Engineering and Applied Sciences, 15 (1). pp. 27-33. ISSN 1819-6608
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Abstract
Over the years, the effects of vortex formation on the aerodynamic performance of airfoils have served as motivation for many research studies. This study takes into account NACA 4412 and NACA 4424 which are cambered airfoils. The simulations performed involve low Reynolds number air flow over the airfoils at several angles of attack. Main attention is given on the separation bubble and vortex shedding phenomena, and the effects of vortex formation on airfoils’ aerodynamic performance as represented by lift and drag coefficients. Apparently, the vortex-influenced velocity curl shows alternating vortex formation along the airfoils’ surfaces and at down streams. Also, the angles of attack influence such formation by developing specific separation bubbles with contrasting fixed points, in particular those along the airfoils’ surfaces.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | vortex shedding; separation bubble. |
| Subjects: | T Technology > T Technology (General) T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL500-777 Aeronautics. Aeronautical engineering |
| Divisions: | Faculty of Mechanical and Manufacturing Engineering > Department of Aeronautical Engineering |
| Depositing User: | Miss Afiqah Faiqah Mohd Hafiz |
| Date Deposited: | 03 Jan 2022 02:31 |
| Last Modified: | 03 Jan 2022 02:31 |
| URI: | http://eprints.uthm.edu.my/id/eprint/4977 |
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