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Numerical investigations of the flow control effect on a thick wind turbine airfoil using deformable trailing edge flaps

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  • Qian, Yaoru
  • Zhang, Yuquan
  • Sun, Yukun
  • Wang, Tongguang

Abstract

Numerical investigations have been carried out regarding the aerodynamic performance of deformable trailing edge flaps (DTEFs) to reduce the unsteady loads on the FFA-W3-241 airfoil under dynamic stall conditions. Simulations were conducted within the framework of OpenFOAM using Reynolds-averaged Navier-Stokes (RANS) approach with the SST k-ω turbulence model and dynamic mesh technique. The control effects of the DTEF size and deflection angle on the stationary airfoil were evaluated through comparative calculations. Then, comprehensive simulations were conducted to gain a deeper insight into the aerodynamic characteristics of a combined simultaneous airfoil-DTEF oscillating motion. Effects of the flap size, oscillation amplitude, frequency, and phase shifts on the airfoil lift and drag hysteresis loops have been analyzed. When the DTEFs oscillate in the same frequency as the airfoil pitch motion and with the phase shift angle of π, the dynamic load can be effectively alleviated. Under this condition, with the appropriate arrangement of flap size and oscillation amplitude, reduction of the lift fluctuations during dynamic motion can be achieved by a maximum of 42.78%, and the corresponding lift-to-drag ratio can also be regulated within a small variation range at a relatively high level.

Suggested Citation

  • Qian, Yaoru & Zhang, Yuquan & Sun, Yukun & Wang, Tongguang, 2023. "Numerical investigations of the flow control effect on a thick wind turbine airfoil using deformable trailing edge flaps," Energy, Elsevier, vol. 265(C).
    • Handle: RePEc:eee:energy:v:265:y:2023:i:c:s0360544222032133
    DOI: 10.1016/j.energy.2022.126327
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    References listed on IDEAS

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    1. Wang, Haipeng & Jiang, Xiao & Chao, Yun & Li, Qian & Li, Mingzhou & Zheng, Wenniu & Chen, Tao, 2019. "Effects of leading edge slat on flow separation and aerodynamic performance of wind turbine," Energy, Elsevier, vol. 182(C), pages 988-998.
    2. Zaki, Abanoub & Abdelrahman, M.A. & Ayad, Samir S. & Abdellatif, O.E., 2022. "Effects of leading edge slat on the aerodynamic performance of low Reynolds number horizontal axis wind turbine," Energy, Elsevier, vol. 239(PD).
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    1. Zhang, Yuquan & Wei, Wenqian & Zheng, Jinhai & Peng, Bin & Qian, Yaoru & Li, Chengyi & Zheng, Yuan & Fernandez-Rodriguez, Emmanuel & Yu, An, 2023. "Quantifying the surge-induced response of a floating tidal stream turbine under wave-current flows," Energy, Elsevier, vol. 283(C).
    2. Sun, Yukun & Qian, Yaoru & Gao, Yang & Wang, Tongguang & Wang, Long, 2024. "Stall control on the wind turbine airfoil via the single and dual-channel of combining bowing and suction technique," Energy, Elsevier, vol. 290(C).
    3. Mustafa Özden & Mustafa Serdar Genç & Kemal Koca, 2023. "Passive Flow Control Application Using Single and Double Vortex Generator on S809 Wind Turbine Airfoil," Energies, MDPI, vol. 16(14), pages 1-17, July.
    4. Zhang, Yuquan & Peng, Bin & Zheng, Jinhai & Zheng, Yuan & Tang, Qinghong & Liu, Zhiqiang & Xu, Junhui & Wang, Yirong & Fernandez-Rodriguez, Emmanuel, 2023. "The impact of yaw motion on the wake interaction of adjacent floating tidal stream turbines under free surface condition," Energy, Elsevier, vol. 283(C).
    5. Jiayan Zhou & Huijuan Guo & Yuan Zheng & Zhi Zhang & Cong Yuan & Bin Liu, 2023. "Research on Wake Field Characteristics and Support Structure Interference of Horizontal Axis Tidal Stream Turbine," Energies, MDPI, vol. 16(9), pages 1-16, May.

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