Influence of Active Flow Control on Blunt-Edged VFE-2 Delta Wing model

  • I. Madan Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81200 Skudai, Johor Bahru, Johor, Malaysia
  • N. Tajudin Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81200 Skudai, Johor Bahru, Johor, Malaysia
  • M. Said Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81200 Skudai, Johor Bahru, Johor, Malaysia
  • S. Mat Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81200 Skudai, Johor Bahru, Johor, Malaysia
  • N. Othman Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81200 Skudai, Johor Bahru, Johor, Malaysia
  • M.A. Wahid Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81200 Skudai, Johor Bahru, Johor, Malaysia
  • N.H. Mohamed Radzi Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81200 Skudai, Johor Bahru, Johor, Malaysia
  • J.J. Miau Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 7010, Taiwan
  • Y.R. Chen Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 7010, Taiwan
  • L.Y. Chen Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 7010, Taiwan
Keywords: Delta wing, VFE-2, Active flow control, Primary vortex, Wind tunnel experiment

Abstract

This paper highlights the flow topology above blunt-edged delta wing of VFE-2 configuration when an active flow control technique called ‘blower’ is applied in the leading edge of the wing. The flow topology above blunt-edged delta wing is very complex, disorganised and unresolved compared to sharp-edged wing. For the sharp leading-edged wing, the onset of the primary vortex is fixed at the apex of the wing and develops along the entire wing towards the trailing edge. However, the onset of the primary vortex is no longer fixed at the apex of the wing for the blunt-edged case. The onset of the primary vortex develops at a certain chord-wise position and it moved upstream or downstream depending on Reynolds number, angle of attack, Mach number and the leading-edge bluntness. An active flow control namely ‘blower’ technique has been applied in the leading edge of the wing in order to investigate the upstream/downstream progression of the primary vortex. This research has been carried out in order to determine either the flow on blunt-edged delta wing would behave as the flow above sharp-edged delta wing if any active flow control is applied. The experiments were performed at Reynolds number of 0.5×106, 1.0×106 and 2.0×106 corresponding to 9 m/s, 18 m/s and 36 m/s in UTM Low Speed wind Tunnel based on the mean aerodynamic chord of the wing. The results obtained from this research have shown that the blower technique has significant effects on the flow topology above blunt-edged delta wing. The main observation from this study was that the primary vortex has been shifted 20% upstream when the blower technique is applied. Another main observation was the ability of this flow control to delay the formation of the vortex breakdown.

Published
2021-03-02
How to Cite
Madan, I., Tajudin, N., Said, M., Mat, S., Othman, N., Wahid, M., Mohamed Radzi, N., Miau, J., Chen, Y., & Chen, L. (2021). Influence of Active Flow Control on Blunt-Edged VFE-2 Delta Wing model. International Journal of Automotive and Mechanical Engineering, 18(1), 8411 -. https://doi.org/10.15282/ijame.18.1.2021.01.0636
Section
Articles