STUDY ON DRAG REDUCTION OF S809 AIRFOIL OF WIND TURBINE WITH DOUBLE-GROOVE STRUCTURE

Wu Wanyang; Li Jian; Zhong Jingjun

doi:10.19912/j.0254-0096.tynxb.2024-0562

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (8) : 55-64. DOI: 10.19912/j.0254-0096.tynxb.2024-0562

STUDY ON DRAG REDUCTION OF S809 AIRFOIL OF WIND TURBINE WITH DOUBLE-GROOVE STRUCTURE

Wu Wanyang, Li Jian, Zhong Jingjun

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Abstract

As a kind of passive flow control technology, airfoil slotting is currently used in the field of wind turbines. The numerical simulation method was used to study the influence of the position, width and angle of the channel of the double-groove structure on the aerodynamic performance of the wind turbine S809 airfoil. The results show that the optimal structural parameters of the double-groove structure are as follows： the front channel is located at 50% of the chord length, the rear channel is located at 70% of the chord length, the width of the double-channel channel is 2.5% of the chord length, and the angle of the double-channel channel is 75°. It significantly improves the aerodynamic performance of the S809 airfoil at a high angle of attack （AOA>12°）, with a maximum increase of 439.03% in the lift-to-drag ratio relative to the benchmark airfoil.

Key words

double-groove structure / stall characteristics / flow control / numerical simulation / aerodynamics

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Wu Wanyang, Li Jian, Zhong Jingjun. STUDY ON DRAG REDUCTION OF S809 AIRFOIL OF WIND TURBINE WITH DOUBLE-GROOVE STRUCTURE[J]. Acta Energiae Solaris Sinica. 2025, 46(8): 55-64 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0562

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