A numerical investigation of synthetic jet effect on dynamic stall control of oscillating airfoil

Document Type : Research Note


Department of Mechanical Engineering, Payame Noor University, Iran


At high angles of attack, the dynamic stall phenomenon could be appearing owing to the vortex shedding particularly in an oscillating airfoil. The consequences of this event are a considerable decrease in the lift and an increase in the drag as well as the pitching moment coefficients. The flow was assumed to be unsteady and turbulent at a Mach number 0.2 and for Reynolds number 1million. This research was done for a range of angle of attack 15o±10o. In order to carry out the numerical analysis of the problem, the 2-D compressible turbulent Navier-Stokes equations based on “Roe” scheme with second-order accuracy were solved. Turbulence modeling was carried out using the three-equation k-kL-ω model. Regarding the obtained results, it was observed that this flow control method had a significant ability in eliminating the dynamic stall. It was also revealed that the phase difference between the jet and airfoil oscillations is more affected by the dynamic stall decrement. In these changes, use of the SJ with 0.1 momentum coefficient, led to the highest amplitude of lift at φ=-30°, and the multiplication of drag amplitude and amplitude of moment coefficient at φ=-10° offered the best performance in addition to the considerable decrease.


1. Zhao, Q., Ma, Y., and Zhao, G. Parametric analyses
on dynamic stall control of rotor airfoil via synthetic
A. Shokrgozar Abbasi and Sh. Yazdani/Scientia Iranica, Transactions B: Mechanical Engineering 28 (2021) 343{354 353
jet", Chinese Journal of Aeronautics, 30(6), pp. 1818{
1834 (2017).
2. Xu, H., Qiao, C., and Ye, Z. Dynamic stall control
on the wind turbine airfoil via a co-
ow jet", Energies,
9(6), pp. 429{454 (2016).
3. Pasandideh Fard, M. and Sahaf, S.A. A novel method
for maximum lift prediction in high-lift con gurations",
Scientia Iranica, 23(2), pp. 668{677 (2016).
4. Heydari, A., Pasandideh-Fard, M., and Malekjafarian,
M. Investigation of unsteady parameters e ects on
aerodynamic coecients of pitching airfoil using coarse
grid computational
uid dynamic", Scientia Iranica,
21(2), pp. 370{386 (2014).
5. Duvigneau, R. and Visonneau, M. Optimization of a
synthetic jet actuator for aerodynamic stall control",
Computers & Fluids, 35(6), pp. 624{638 (2006).
6. Esmaeili, H. Monir, H. Tadjfar, M., and Bakhtian,
A. Tangential synthetic jets for separation control",
Journal of Fluids and Structures, 45, pp. 50{65 (2014).
7. Zhang, W., Zhang, Z., Chen, Z., and Tang, Q. Main
characteristics of suction control of
ow separation of
an airfoil at low Reynolds numbers", European Journal
of Mechanics-B/Fluids, 65, pp. 88{97 (2017).
8. Tran, S.A., McGlynn, E., and Sahni, O. Large eddy
simulation of
ow interactions of a nite-span synthetic
jet on an airfoil", 55th AIAA Aerospace Sciences
Meeting, pp. 1{11 (2017).
9. Montazer, E., Mirzaei, M., Salami, E., Ward, T.A.,
Romli, F.I., and Kazi, S.N. Optimization of a synthetic
jet actuator for
ow control around an airfoil",
IOP Conference Series: Materials Science and Engineering,
152, p. 012023 (2016).
10. Tran, S.A., Sahni, O., and Corson, D. Synthetic jet
based active
ow control of dynamic stall phenomenon
on wind turbines under yaw misalignment", in 32nd
ASME Wind Energy Symposium, AIAA SciTech Forum,
National Harbor, Maryland (2014).
11. Youse , K., Saleh, R., and Zahedi, P. Numerical
study of blowing and suction slot geometry optimization
on NACA 0012 airfoil", Journal of Mechanical
Science and Technology, 28(4), pp. 1297{1310 (2014).
12. Moshfeghi, M. and Hur, N. Numerical study on the
e ects of a synthetic jet actuator on S809 airfoil aerodynamics
at di erent
ow regimes and jet
ow angles",
Journal of Mechanical Science and Technology, 31(3),
pp. 1233{1240 (2017).
13. Zhao, G. and Zhao, Q. Parametric analyses for
synthetic jet control on separation and stall over rotor
airfoil", Chinese Journal of Aeronautics, 27(5), pp.
1051{1061 (2014).
14. Tang, H., Salunkhe, P., Zheng, Y., Du, J., and Wu, Y.
On the use of synthetic jet actuator arrays for active

ow separation control", Experimental Thermal and
Fluid Science, 57, pp. 1{10 (2014).
15. De Giorgi, M.G., De Luca, C.G., Ficarella, A., and
Marra, F. Comparison between synthetic jets and
continuous jets for active
ow control: Application
on a NACA 0015 and a compressor stator cascade",
Aerospace Science and Technology, 43, pp. 256{280
16. Abe, Y., Okada, K., Nonomura, T., and Fujii, K. The
e ects of actuation frequency on the separation control
over an airfoil using a synthetic jet", Progress in Flight
Physics, 7, pp. 147{168 (2015).
17. Neve, M., Kalamkar, V.R., and Wagh, A. Numerical
analysis of NACA aerofoil using synthetic jet",
V001T01A006 (2017).
18. Parthasarathy, T. and Das, S.P. Some aspects of
control over a NACA0015 airfoil using synthetic jets",
Journal of Physics: Conference Series, 822, p. 012009
19. Blazek, J., Computational Fluid Dynamics: Principles
and Applications, Elsevier Science Ltd. (2001).
20. Salimipour, S.E., Teymourtash, A.R., and Mamourian,
M. Investigation and comparison of performance of
some air gun projectiles with nose shape modi cations",
Proceedings of the Institution of Mechanical
Engineers, Part P: Journal of Sports Engineering and
Technology, 233(1), pp. 3{15 (2018).
21. Salimipour, S.E., Teymourtash, A.R., and Mamourian,
M. Trajectory modi cation of a transonic spherical
projectile under Hop-up mechanism", Journal of Scientia
Iranica, Transactions B: Mechanical Engineering,
26(2), pp. 796{807 (2019).
DOI: 10.24200/SCI.2018.20224
22. Zhang, Z., Zhang, W., Chen, Z., Sun, X., and Xia,
C. Suction control of
ow separation of a low-aspectratio
wing at a low Reynolds number", Fluid Dynamics
Research, 50(6), p. 065504 (2018).
23. Bachant, P. andWosnik, M. E ects of Reynolds number
on the energy conversion and near-wake dynamics
of a high solidity vertical-axis cross-
ow turbine",
Energies, 9(2), p. 73 (2016).
24. Salimipour, S.E. A modi cation of the k-kL-! turbulence
model for simulation of short and long separation
bubbles", Computers & Fluids, 181, pp. 67{76 (2019).
25. Roe, P.L. Approximate Riemann solvers, parameter
vectors, and di erence schemes", Journal of Computational
Physics, 43(2), pp. 357{372 (1981).
26. Salimipour, S.E. and Yazdani, Sh. Dynamic stall
control of low Reynolds number airfoil with separation
bubble control blade", Modares Mechanical Engineering,
15(6), pp. 393{401 (2015) (In Persian).
27. Latha, S. and Gayathri, R. Comparison between
algebraic grid and elliptic grid over an airfoil", International
Journal of Advance Research In Science And
Engineering, 4(03) (March 2015).
354 A. Shokrgozar Abbasi and Sh. Yazdani/Scientia Iranica, Transactions B: Mechanical Engineering 28 (2021) 343{354
28. Piziali, R.A. 2-D and 3-D oscillating wing aerodynamics
for a range of angles of attack including stall",
NASA Ames Research Center; Mo ett Field, CA,
United States (1994).
29. Tran, S.A. Fisher, A.E., Corson, D., and Sahni, O.
Dynamic stall alleviation for an SC1095 airfoil using
synthetic jet actuation", 53rd AIAA Aerospace Sciences
Meeting, 5{9 January 2015, Kissimmee, Florida