Post-stall lift enhancement on an airfoil by local unsteady control: Part II. Mode competition and vortex dynamics

4th Shear Flow Control Conference

Volumn , Issue , 1997, Pages

  Wu, Jie Zhi ^a   Lu, Xi Yun ^a   Wu, Jain Ming ^a  

^a UNIVERSITY OF TENNESSEE SPACE INSTITUTE   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

AIRFOILS; ANGLE OF ATTACK; FLOW CONTROL; RESONANCE; REYNOLDS EQUATION; VORTEX FLOW;

ANGLES OF ATTACK; FORCING FREQUENCIES; LIFT ENHANCEMENT; MODE COMPETITION; PHYSICAL MECHANISM; QUASI-PERIODIC FLOW; REYNOLDS AVERAGED; SHEDDING FREQUENCIES;

SHEAR FLOW;

EID: 84983212547     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: None     Document Type: Conference Paper

References (22)

1. Wu, J.M., Lu, X.Y., Denny, A.G., M. Fan, and Wu, J.Z. 1996. Post-stall lift enhancement on an airfoil by a local unsteady control. Part I. Lift and drag characteristics. AIAA paper 97-2063.
2. Ho, C.-M. and Huerre, P. 1984. Perturbed free shear layers. Ann. Rev. Fluid Meek. 16, 365-424.
3. Rockwell, D. 1990. Active control of globallyunstable separated flows. Intern. Symp. Nonsteady Fluid Dynamics, June 4-7, 1990, Ontario, Canada. J.A. Miller and D.P. Telionis eds., ASME, pp. 379- 394.
4. Kourta, A., Boisson, H.C., Chassaing, P., and Mirih, H.H. 1987. Nonlinear interaction and the transition to turbulence in the wake of a circular cylinder. J. Fluid Mech. 181, 141-161.
5. Karniadakis, G.E. and Triantafyllou, G.S. 1989. Frequency selection and asymptotic states in laminar wakes. J. Fluid Mech. 199, 441-469.
6. Wygnanski, ! 1987. Coherent motion in excited free shear flows. AIAA J. 25, 201-213.
7. Malkus W V 1996. Statistical stability criteria for turbulent flow. Phys. Fluids 8, 1582-1587.
8. Olinger, D.J. and Sreenivasan, K.R. 1988. Nonlinear dynamics of the wake of an oscillating cylinder. Phys. Rev. Lett. 60, 797-800.
9. Jensen, M.H., Bak, P., and Bohr, T. 1984. J.Transition to chaos by interaction of resonances in dissipative systems. I. Circle maps. Phys. Rev. A 30, 1960-1981.
10. Gerrard, J. H. 1978. The wakes of cylindrical bluff body at low Reynolds number. Phil. Trans. R. Soc. Lond. A288, 351-382.
11. Unal, M.F. and Rockwell, D. 1988. On vortex formation from a cylinder. Part I. The initial instability. J. Fluid Mech. 190, 491-512.
12. Willam-Stuber, K. and Gharib, M. 1990. Transition from order to chaos in the wake of an airfoil. J. Fluid Mech. 213, 29-57.
13. Miksad, R.W., Jones, F.L., Powers, E.J., Kirn, Y.C and Khadra, L. 1982. Experiments on the role oi amplitude and phase modulations during transition to turbulence. J. Fluid Mech. 123, 1-29.
14. Koopmann, G.H. 1967. The vortex wakes of vibrating cylinders at low Reynolds numbers. J. Fluid Mech. 28, 501-512.
15. Gharib, M. and William-Stuber, K. 1989. Experiments on the forced wake of an airfoil. J. Fluid Mech. 208, 225-255.
16. Lam, K.M. 1996. Phase-locked reduction of vortex shedding in flow past an inclined flat plate. Phys. Fluids 8, 1159-1168.
17. Lu, X.Y. and Dalton, C. 1996. Calculation of the timing of vortex formation from an oscillating cylinder. J. Fluids Structures 10, 527-541.
18. th Quick- Goethert Lecture Series, Oct. 21, 1982, Univ. Tenn. Space Inst. Printed by Lockheed-Georgia Company.
19. Koochesfahani, M.M. 1989. Vortical patterns in the wake of an oscillating airfoil. AIAA J. 27, 1200- 1205.
20. Detemple-Laake, E. and Eckelmann, H. 1989. Phenomenology of Karman vortex streets in oscillating flow. Exp. Fluids 7, 217-227.
21. Ho, C.-M. and Nosseir, N.S. 1981. Dynamics of an impinging jet. Part I. The feedback phenomenon. J. Fluid Mech. 105, 119-142.
22. Hunt, J.C.R., Abell, C.J., Peterla, J.A., and Woo, II. 1978. Kinematical studies of the flows around free or surface mounted obstacles: applying topology to flow visualization. J. Fluid mech. 86, 179- 200.