The Effect of Streamwise Location of Micro Vortex Generator on Airfoil Aerodynamic Performance in Subsonic Flow

Irahasira Said ； Mohan Kumar Poonaesparan ； Baizura Bohari ； Azam Che Idris ； Mohd Rosdzimin Abdul Rahman ； Mohd Rashdan Saad

《Journal of Aeronautics, Astronautics and Aviation》 53卷2期 Vol.53 No.2 ISSA 2020 Special Issue (2021/06) Pp. 173-178

https://doi.org/10.6125/JoAAA.202106_53(2).09

摘要

This study proposes to study the optimum location of employing micro vortex generator (MVG) to control drag coefficient at different angles of attack that varies from 3° to 21°. MVG has been widely used in improving aerodynamics performance in aerospace and automotive applications. The capability to contribute to drag reduction is reliable and have been tested in previous studies. In this study, the MVG positions were tested from the distance of 10% to 60% of the chord length from the airfoil leading edge. This is to achieve the best lift coefficient and drag coefficient and subsequently the lift to drag ratio with the instalment of MVG on airfoil. NACA 4415 airfoil model with vane type MVG was tested in Longwin LW-9300R subsonic wind tunnel at Reynolds number of 2×10^5. The results obtained from the tests show optimum location of the MVG instalment is at 30% of the chord length and the optimum angle of attack is 3°, which exhibits the best improvement in lift-to-drag ratio of the airfoil.

關鍵字

Vortex Generator ； Subsonic Flow ； Drag Reduction ； Airfoil ； Vane

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