JOURNAL BROWSE
Search
Advanced SearchSearch Tips
A PIV Study of Flow Patterns Over Stationary and Pitch-Oscillating Airfoils with Blowing Jet
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
A PIV Study of Flow Patterns Over Stationary and Pitch-Oscillating Airfoils with Blowing Jet
Lee, Ki-Young; Chung, Hyoung-Seog; Cho, Dong-Hyun;
  PDF(new window)
 Abstract
A particle image velocimetry (PIV) technique was employed to investigate the effects of blowing jet on the flow characteristics over stationary and pitch-oscillating airfoils. The Reynolds number was 7.84×10⁵ based on the chord length. It was found that for stationary airfoil cases, continuous and pulsating blowing jets successfully reduced separated wake region at high angles of attack. A comparison study of two different types of jet blowing indicated that pulsating jet is more effective than continuous jet for flow separation control. Pulsating leading-edge blowing postpones flow separation and increased stall angle of attack by 2°-3°. For pitch-oscillating airfoil cases, the PIV results showed that blowing jet efficiently delays the separation onset point during pitch-up stroke, whereas it does not prevent flow separation during pitch-down stroke, even at angles of attack smaller than static ones.
 Keywords
Pitch-Oscillating Airfoil;Flow Pattern;Blowing Jet;Flow Separation Control;
 Language
English
 Cited by
1.
Flow Actuation by DC Surface Discharge Plasma Actuator in Different Discharge Modes,;;

International Journal of Aeronautical and Space Sciences, 2015. vol.16. 3, pp.339-346 crossref(new window)
 References
1.
Chen, F., and Beeler, G., 'Virtual Shaping of a Two-Dimensional NACA 0015 Airfoil Using Synthetic Jet Actuator', AIAA Paper No. 2002-3273, 2002

2.
Greenblatt, D. and Wygnanski, I., 'The Control of Flow Separation by Periodic Excitation', Progress in Aerospace Sciences, Vol. 36, pp. 487-545, 2000 crossref(new window)

3.
Mahmood, G. M., and Smith, D. R., 'Proportional Aerodynamic Control of a UAV Wing Model Using Synthetic Jets', AIAA Paper No. 2007-3851, 2007

4.
Roupassov, D. V., Zavyalov, I. N., and Starikovskii, A. Yu., 'Boundary Layer Separation Plasma Control Using Low-Temperature Non-Equilibrium Plasma of Gas Discharge', AIAA Paper No. 2006-373, 2006

5.
Gaitode, D. V., Visbal, M R., and Roy, S., 'A Coupled Approach for Plasma-Based Flow Control Simulations of Wing Sections', AIAA Paper No. 2006-1205, 2006

6.
Mabe, J. H., Calkins, F. F., Wesley, B., Woszidlo, R., Taubert, L., and Wygnanski, I., 'On the Use of Single Dielectric Barrier Discharge Plasma Actuators for Improving the Performance of Airfoil', AIAA Paper No. 2007-3972, 2007

7.
Rullan, J. M., Vlachos, P. P., and Telionis, D. P., 'Post-Stall Flow Control of Sharp-edged Wings via Unsteady Blowing', J. of Aircraft, Vol. 43, No. 6, pp. 1738-1746, 2006 crossref(new window)

8.
Schaeffler, N. W., 'The Interaction of Synthetic Jet and a Turbulent Boundary Layer', AIAA Paper No. 2003-0643, 2003

9.
Leishman, J. G., Principles of Helicopter Aerodynamics, 2nd ed., Cambridge University Press, 2006

10.
Sosa, R., Artana, G., Moreau, E., and Touchard, G., 'Stall Control at High Angle of Attack with Plasma Sheet Actuators', Exp. Fluids, Vol. 42, pp. 143-167, 2007 crossref(new window)

11.
Lee, K. Y., Chung, H. S., Cho, D. H., and Sohn, M. H, 2007, 'Flow Separation Control Effects of Blowing Jet on an Airfoil', Journal of The Korean Society for Aeronautical and Space Sciences, Vol. 35, No. 12, pp. 1059-1066 crossref(new window)

12.
Wong, C., and Kontis, K., 'Flow Control by Spanwise Blowing on a NACA 0012', J. of aircraft, Vol. 44, No. 1, pp. 337-340, 2007 crossref(new window)

13.
Lee, K. Y., Chung, H. S., and Sohn, M. H, 2006, 'Effect of Reduced Frequency on the Flow Pattern of Pitch-Oscillating Elliptic Airfoil', Journal of the Korea Institute of Military Science and Technology, Vol. 9, No. 4, pp. 128-136

14.
Greenblatt, D. and Wygnanski, I., 'Effect of leading-edge Curvature and Slot Geometry on Dynamic Stall Control', AIAA 2002-3271, 2002

15.
Amitay, M., and Glezer, A., 'The Role of Actuation Frequency in Controlled Flow Reattachment over a Stalled Airfoil', AIAA Journal, Vol. 40, pp. 209-216, 2002 crossref(new window)