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Aeroelastic Analysis of Oscillatory Blowing Control of the Airfoil’s Flutter at Large Attack Angle

[+] Author Affiliations
Jin Yan, Yuan Xin

Tsinghua University, Beijing, P. R. China

Paper No. IMECE2002-32995, pp. 63-69; 7 pages
  • ASME 2002 International Mechanical Engineering Congress and Exposition
  • 5th International Symposium on Fluid Structure Interaction, Aeroelasticity, and Flow Induced Vibration and Noise
  • New Orleans, Louisiana, USA, November 17–22, 2002
  • Conference Sponsors: Applied Mechanics Division
  • ISBN: 0-7918-3659-2 | eISBN: 0-7918-1691-5, 0-7918-1692-3, 0-7918-1693-1
  • Copyright © 2002 by ASME


It is known that oscillatory blowing on the back of an airfoil can delay the flow separation and the stall. The purpose of the present paper is to apply the oscillatory blowing technique to the control of the airfoil’s flutter. High accuracy, high solution fluid-structure coupling numerical method is used in the study. The numerical results show that the steady blowing will weaken the flutter, but at the same time the excess blowing will make the lift coefficient to drop. The best blowing velocity can be found by the present numerical method. The influence of the frequency and the amplitude of the oscillatory blowing on the airfoil’s vibration is studied in the paper. The numerical results show that the oscillatory blowing is more efficient in the cases of flutter than steady blowing.

Copyright © 2002 by ASME



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