Effects of Simultaneous Suction and Blowing over an Airfoil on Flow Behavior and Aerodynamic Coefficients

Document Type : Original Article


Department of Mechanical Engineering, Arak University of Technology, Arak, Iran


In this study, the simultaneous effect of suction and blowing on the boundary layer and the effect of control parameters on the flow separation from a NACA 0012 airfoil is numerically analyzed. Reynolds number is considered 500000 , and the shear stress transport (SST) k-w turbulence model is used to estimate eddy viscosity. The airfoil is supposed to be 2-D. To validate the numerical results, they were compared with reported experiments. In the flow control by simultaneous suction and blowing, the location of the suction jet was 0.1 of the airfoil chord from the fixed leading edge, and that of the blowing jet was 0.5, 0.7, and 0.9 of the airfoil chord from the leading edge. When the blowing location is at 0.5 of the airfoil chord, better results are observed than I n; other locations. An increase in suction jet velocity increases the lift-drag ratio between 22% and 55%. Also, increasing the blowing jet velocity increases this ratio between 43% and 55%. Horizontal blowing has the most negligible effect on improving aerodynamic characteristics. Based on the results, at the angle of attack of 16°, blowing is most effective in the flow control at  with an approximate velocity of half the free stream velocity. In this condition, vertical suction has the best effect , and the lift-drag  ratio will increase by 76%.


Main Subjects

  1. E.P. DeMauro, H. Dell’Orso, S. Zaremski, C.M. Leong, M. Amitay, Control of laminar separation bubble on NACA 0009 airfoil using electroactive polymers, AIAA Journal, 53(8) (2015) 2270-2279. Doi: 10.2514/1.J053670
  2. K. Kato, C. Breitsamter, Flow control on Gö 387 airfoil by using nanosecond pulse plasma actuator, in: Instability and Control of Massively Separated Flows, Springer, 2015, pp. 65-70. Doi: /10.1007/978-3-319-06260-0_9
  3. F. Frunzulică, A. Dumitrache, H. Dumitrescu, Investigations of passive flow control devices for vertical axis wind turbines, PAMM, 14(1) (2014) 723-724. Doi: 10.1002/pamm.201410344
  4. M. Gad-el-Hak, Flow control: passive, active, and reactive flow management, Cambridge university press, 2007.
  5. D. You, P. Moin, Active control of flow separation over an airfoil using synthetic jets, Journal of Fluids and Structures, 24(8) (2008) 1349-1357. Doi: 10.1016/j.jfluidstructs.2008.06.017
  6. A.T. Piperas, Investigation of boundary layer suction on a wind turbine airfoil using CFD, Technical University of Denmark, (2010).
  7. D. Luo, X. Sun, D. Huang, G. Wu, Flow control effectiveness of synthetic jet on a stalled airfoil, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 225(9) (2011) 2106-2114. Doi: 10.1177/0954406211407255
  8. M.S. Genç, Ü. Kaynak, H. Yapici, Performance of transition model for predicting low Re aerofoil flows without/with single and simultaneous blowing and suction, European Journal of Mechanics-B/Fluids, 30(2) (2011) 218-235. Doi: 10.1016/j.euromechflu.2010.11.001
  9. T. Chng, A. Rachman, H. Tsai, G.-C. Zha, Flow control of an airfoil via injection and suction, Journal of Aircraft, 46(1) (2009) 291-300. Doi: 10.2514/1.38394
  10. L. Huang, P. Huang, R. LeBeau, T. Hauser, Numerical study of blowing and suction control mechanism on NACA0012 airfoil, Journal of Aircraft, 41(5) (2004) 1005-1013. Doi: 10.2514/1.2255
  11. G.-C. Zha, W. Gao, C.D. Paxton, Jet effects on coflow jet airfoil performance, AIAA Journal, 45(6) (2007) 1222-1231. Doi: 10.2514/1.23995
  12. G.-C. Zha, B.F. Carroll, C.D. Paxton, C.A. Conley, A. Wells, High-performance airfoil using coflow jet flow control, AIAA journal, 45(8) (2007) 2087-2090.
  13. M.R. Noor, M. Assad-Uz-Zaman, M. Mashud, Effect of Co-Flow Jet over an Airfoil: Numerical Approach, Journal of Contemporary Engineering Sciences, 7(17), (2014) 845 - 851. Doi: http://dx.doi.org/10.12988/ces.2014.4655
  14. B. Dano, D. Kirk, G. Zha, Experimental investigation of jet mixing mechanism of co-flow jet airfoil, in: 5th flow control conference, 2010, pp. 4421. Doi: https://doi.org/10.2514/6.2010-4421
  15. V.Y. Anoosha, D.A. Shah, R. Murali, Performance Analysis of Suction Airfoil and Computational Flow Visualization of Co-Flow Jet Airfoil. International Journal of Innovative Science, Engineering & Technology, 2(5), (2015), 124-131. Retrieved from https://ijiset.com/vol2/v2s5/IJISET_V2_I4_17.pdf
  16. S. Ethiraj, Aerodynamic performance analysis of a co-flow jet aerfoil using CFD, International Research Journal of Engineering and Technology, 4(7) (2017), 987-993. Retrieved from https://www.irjet.net/archives/V4/i7/IRJET-V4I7229.pdf
  17. C.C. Critzos, H.H. Heyson, R.W. Boswinkle Jr, Aerodynamic characteristics of NACA 0012 airfoil section at angles of attack from 0 deg to 180 deg, National Aeronautics and Space Administration Washington DC, 1955.
  18. E.N. Jacobs, A. Sherman, Airfoil section characteristics as affected by variations of the Reynolds number, Report-National Advisory Committee for Aeronautics, 586 (1937) 227-267.
  19. R.E. Dannenberg, J.A. Weiberg, Section characteristics of a 10.5-percent-thick airfoil with area suction as affected by chordwise distribution of permeability, National Aeronautics and Space Administration Moffett Field Ca Ames, (No. NACA-TN-2847) 1952.