EFFECT OF SURGE MOTION ON DYNAMIC STALL CHARACTERISTICS OF WIND TURBINE AIRFOIL

Feng Junxin; Zhao Zhenzhou; Liu Yige; Liu Huiwen; Jiang Ruifang; Wang Dingding

doi:10.19912/j.0254-0096.tynxb.2022-0963

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (12) : 182-189. DOI: 10.19912/j.0254-0096.tynxb.2022-0963

EFFECT OF SURGE MOTION ON DYNAMIC STALL CHARACTERISTICS OF WIND TURBINE AIRFOIL

Feng Junxin, Zhao Zhenzhou, Liu Yige, Liu Huiwen, Jiang Ruifang, Wang Dingding

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Abstract

The transition model and SST k-ω turbulence model are used to study dynamic stall of S809 airfoil under the influence of hybrid motion （surge and pitch） with different surge directions, frequencies and amplitude. The results show that the turbulent kinetic energy of the airfoil is enhanced in the upwind case with increasing of surge frequency, the boundary layer energy is increased and the disturbance degree is deepened, which makes the airfoil stall in advance while the lift is increased. The higher the surge frequency is, the stronger and wider coverage leading-edge vortex is created in the upwind process, which accelerates the vortex shedding. The surge weakens the induction effect of the leading-edge vortex and effectively reduces the topology of trailing edge vortex in downwind process. With the surge amplitude increasing, the response amplitude of the lift and drag coefficient of the airfoil increases significantly, especially in the pitching up stage when the airfoil is upwind. This study reveals the dynamic stall characteristics of airfoil under the condition of surge motion, which is important to accurately understand and evaluate the aerodynamic performance of floating wind turbine.

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wind turbines / aerodynamics / numerical simulation / surge motion / pitching motion / dynamic stall

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Feng Junxin, Zhao Zhenzhou, Liu Yige, Liu Huiwen, Jiang Ruifang, Wang Dingding. EFFECT OF SURGE MOTION ON DYNAMIC STALL CHARACTERISTICS OF WIND TURBINE AIRFOIL[J]. Acta Energiae Solaris Sinica. 2023, 44(12): 182-189 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0963

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