Applied Mathematics and Mechanics

, Volume 40, Issue 1, pp 1–12 | Cite as

Numerical and experimental research of flow control on an NACA 0012 airfoil by local vibration

  • Bin Lou
  • Shangjun Ye
  • Gaofeng Wang
  • Zhilong HuangEmail author


A flow control technique by local vibration is proposed to improve the aerodynamic performance of a typical airfoil NACA 0012. Both wind-tunnel experiments and a large eddy simulation (LES) are carried out to study the effects of local vibration on drag reduction over a wide range of angles of attack. The application parameters of local vibration on the upper surface of the airfoil are first evaluated by numerical simulations. The mounted position is chosen at 0.065–0.09 of chord length from the leading edge. The influence of oscillation frequency is investigated both by numerical simulations and experiments. The optimal frequencies are near the dominant frequencies of shear layer vortices and wake vortices. The patterns of shear vortices caused by local vibration are also studied to determine the drag reduction mechanism of this flow control method. The results indicate that local vibration can improve the aerodynamic performance of the airfoil. In particular, it can reduce the drag by changing the vortex generation patterns.

Key words

local vibration airfoil vortex control drag reduction 



coordinate along the length of the airfoil


thickness coordinates above and below the line extending along the length of the airfoil


maximum thickness of the airfoil


chord of the airfoil


vertical position coordinate of the vibrating part


amplitude of vibration


time of vibration


horizontal coordinate of the front end on the vibrating part


horizontal coordinate of the back end on the vibrating part


airfoil lift coefficient


airfoil drag coefficient


frequency of vibration

Chinese Library Classification


2010 Mathematics Subject Classification



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Copyright information

© Shanghai University and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Bin Lou
    • 1
  • Shangjun Ye
    • 1
  • Gaofeng Wang
    • 1
  • Zhilong Huang
    • 1
    Email author
  1. 1.School of Aeronautics and AstronauticsZhejiang UniversityHangzhouChina

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