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Investigations of synthetic jet control effects on helicopter rotor in forward flight based on the CFD method

  • Q.-J. Zhao (a1), X. Chen (a1), Y.-Yang Ma (a1) and G.-Q. Zhao (a2)


To investigate the control effect of the synthetic jet on the aerodynamic characteristic of rotors, a numerical simulation procedure for the rotor flowfield is established. First, a moving-embedded grid method and an unsteady Reynolds Averaged Navier–Stokes (URANS) solver are established for predicting the complex flowfield of rotors. A velocity jet boundary condition over the jet actuator orifice is constructed, and a numerical method for simulating the active flow control on rotors is developed. Then, the effectiveness of the simulation method is validated by comparing the numerical results of jet control on NACA 0015 aerofoil with the experimental data. At last, the aerodynamic characteristic of rotors with synthetic jet actuators located on the suction surface of the blade in forward flight is calculated. The results indicate that the synthetic jet has the capability of improving the aerodynamic characteristic of rotors, especially in inhibiting the flow separation over the surface. In addition, the increase of the jet momentum coefficient and the jet angle can both enhance the lift coefficient in the retreating side. Compared with a single jet, jet arrays have better control effects on improving the aerodynamic characteristic of rotors in forward flight.


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1.Leishman, J.G. Principles of Helicopter Aerodynamics, Cambridge University Press, 2000, New York, US, Chapter 8.
2.Yu, Y.H., Lee, S., McAlister, K.W., Tung, C. and Wang, C.M. Dynamic stall control for advanced rotorcraft application, AIAA J, 1995, 33, (2), pp 289295.
3.Liipfert, E., Pottler, K. and Ulmer, S. Parabolic trough optical performance analysis techniques, J Sol Energ-T ASME, 2007, 147, (2), pp 147152.
4.Ma, X.Y., Guo, H.T. and Fan, Z.L. Investigating of simulation methods for synthetic jet, Procedia Engineering, 2012, 31, pp 416421.
5.Xia, Q.F. and Zhong, S. Enhancement of laminar flow mixing using a pair of staggered lateral synthetic jets, Sensors and Actuators A: Physical, 2014, 207, pp 7583.
6.Nagib, H., Greenblatt, D. and Kiedaisch, J. Effective flow control for rotorcraft applications at flight Mach number, 31st AIAA Fluid Dynamics Conference and Exhibit, 11–14 June 2001, Anaheim, California, US.
7.Woo, G.T., Crittenden, T. and Glezer, A. Transitory control of dynamic stall over a stalled airfoil, 39th AIAA Fluid Dynamics Conference, 22–25 June 2009, San Antonio, Texas, US.
8.Smith, B.L. and Glezer, A. The formation and evolution of synthetic jets, Physics of Fluids, 1998, 10, (9), pp 22812297.
9.Durrani, D. and Haider, B.A. Study of stall delay over a generic airfoil using synthetic jet actuator, 49th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, 4–7 January 2011, Orlando, Florida, US. AIAA No 2011-943, 2011. doi:10.2514/6.2011-943.
10.Sandra, U. Experimental analysis and analytical modeling of synthetic jet cross flow interactions, Dissertation, University of Maryland, 2007.
11.Hassan, A.A. Oscillatory and pulsed jets for improved airfoil aerodynamics- a numerical simulation, 42nd AIAA Aerospace Sciences Meeting and Exhibit, 5–8 January 2004, Reno, Nevada, US. doi:10.2514/6.2004-227.
12.Seifert, A., Darabi, A. and Wygnanski, I. Delay of airfoil stall by periodic excitation, AIAA J, 1999, 33, (4), pp 691707.
13.Gilarranz, J.L., Traub, L.W. and Rediniotis, O.K. Characterization of a compact, high-power synthetic jet actuator for flow separation control, 40th AIAA Aerospace Sciences Meeting & Exhibit, 14–17 January 2002, Reno, Nevada, US. AIAA No. 2002-127, 2002. doi:10.2514/6.2002-127.
14.Zhang, P.F., Yan, B. and Dai, C.F. Lift enhancement method by synthetic jet circulation control, Science China Technological Sciences, 2012, 55, (9), pp 25852592.
15.Monir, E.H., Tadjfar, M. and Bakhtian, A. Tangential synthetic jets for separation control, J Fluids and Structures, 2014, 45, pp 5065.
16.Kral, L.D., Donovan, J.F. and Cain, A.B. Numerical simulation of synthetic jet actuators, 4th Shear Flow Control Conference, 29 June–2 July 1997, Snowmass village, Colorado, US. AIAA No. 1997-1824, 1997. doi:10.2514/6.1997-1824.
17.Lorber, P., McCormick, D. and Anderson, B.W. Rotorcraft retreating blade stall control, Fluids 2000 Conference and Exhibit, 19–22 June 2000, Denver, Colorado, US. AIAA No. 2000-2475, 2000. doi:10.2514/6.2000-2475.
18.Hassan, A.A., Straub, F.K. and Charles, B.D. Effects of surface blowing/suction on the aerodynamics of helicopter rotor blade-vortex interactions (BVI)- a numerical simulation, Proceedings of 52nd Annual Forum of AHS, 4–6 June 1996, Washington, DC, US.
19.Dindar, M., Jansen, K. and Hassan, A.A. Effect of transpiration flow control on hovering rotor blades, 17th Applied Aerodynamics Conference, 28 June–1 July 1999, Norfolk, Virginia, US. AIAA No. 1999-3192, 1999. doi:10.2514/6.1999-3192.
20.Cain, A.B., Kral, L.D., Donovan, J.F. and Smith, T.D. Numerical simulation of compressible synthetic jet flows, 36th AIAA Aerospace Sciences Meeting and Exhibit, 12–15 January 1998, Reno, Nevada, US. doi:10.2514/6.1998-84.
21.Zhao, Q.J., Zhao, G.Q., Wang, B., Wang, Q., Shi, Y.J. and Xu, G.H. Robust Navier-Stokes method for predicting unsteady flowfield and aerodynamic characteristics of helicopter rotor, Chinese J Aeronautics, 2018, 31, (2), pp 214224.
22.Sharov, D. and Nakahashi, K. Low speed preconditioning and LU-SGS scheme for 3D viscous flow computations on unstructured grids, 36th AIAA Aerospace Sciences Meeting and Exhibit, 12–15 January 1998, Reno, Nevada, US. AIAA No. 1998-0614, 1998. doi:10.2514/6.1998-614.
23.Edwards, J.R., Franklin, R.K. and Liou, M.S. Low-diffusion flux-splitting methods for real fluid flows with phase transitions, AIAA J, 2000, 38, (9), pp 16241633.
24.Menter, F.R. Two-equation eddy-viscosity turbulence models for engineering applications, AIAA J, 1994, 32, (8), pp 15981605.
25.Wang, B., Zhao, Q.J. and Xu, G.H. A new moving-embedded grid method for numerical simulation of unsteady flowfield of the helicopter rotor in forward flight, Acta Aerodynamica Sinica, 2012, 30, (1), pp 1421. ( in Chinese)
26.Donovan, J.F., Kral, L.D. and Cary, A.W. Active flow control applied to an airfoil, 36th AIAA Aerospace Sciences Meeting and Exhibit, 12–15 January 1998, Reno, Nevada, US. AIAA No. 1998-16119, 1998. doi:10.2514/6.1998-210.
27.Caradonna, T.X., Laub, G.H. and Tung, C. An experimental investigation of the parallel blade-vortex interactions, Netherlands Association of Aeronautical Engineers and Technische Hogeschool te Delft, 10th European Rotorcraft Forum, 28–31 August, 1984, The Hague, Netherlands. NASA No. TM 86005, 1984.
28.Sheffer, S.G., Alonso, J.J., Martinelli, L. and Jameson, A. Time-accurate simulation of helicopter rotor flows including aeroelastic effects, 35th Aerospace Sciences Meeting and Exhibit, 6–9 January 1997, Reno, Nevada, US. AIAA No. 1997-0399, 1997. doi:10.2514/6.1997-399.


Investigations of synthetic jet control effects on helicopter rotor in forward flight based on the CFD method

  • Q.-J. Zhao (a1), X. Chen (a1), Y.-Yang Ma (a1) and G.-Q. Zhao (a2)


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