Journal of Shanghai Jiao Tong University ›› 2022, Vol. 56 ›› Issue (8): 1101-1110.doi: 10.16183/j.cnki.jsjtu.2021.384

• Aeronautics and Astronautics • Previous Articles    

Circulation Control of Airfoil Aerodynamic Force Under Ground Effect of Wavy Wall

LIU Hao1, SUN Jianhong1,2(), SUN Zhi2, TAO Yang3, WANG Dechen1, LIU Guangyuan3   

  1. 1. Key Laboratory of Aircraft Environment Control and Life Support of the Ministry of Industry and Information Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
    2. College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
    3. High Speed Aerodynamic Institute of China Aerodynamics Research and Development Center, Mianyang 621000, Sichuan, China
  • Received:2021-09-30 Online:2022-08-28 Published:2022-08-26
  • Contact: SUN Jianhong


The interaction of airflow and sea waves seriously affects the flight stability and cruising safety of ground effect vehicles. The influence of different sea states and different angles of attack were analyzed numerically on the aerodynamic characteristics of the airfoil under ground effect of wavy wall. The influence of the constant blowing and periodic blowing methods was further studied on the aerodynamic force of the airfoil under ground effect. The simulation results show that the lift coefficient of the airfoil changes periodically with the wave under the wavy ground wall. The amplitude of the lift coefficient fluctuation is larger with the increasing of wave height and angle of attack, or the decreasing of wavelength. Applying the circulation control method for periodic blowing in the same period as the relative motion of the waves can effectively weaken the fluctuation of the airfoil lift coefficient under wavy sea conditions and improve the flight stability and safety of ground effect vehicles.

Key words: ground effect, wavy wall, aerodynamic characteristic, circulation control, blowing momentum coefficient

CLC Number: