EXPERIMENTAL STUDY ON LOAD CHARACTERISTICS OF COUNTER-ROTATING DOUBLE-WIND TURBINE WIND TURBINE IN WIND TUNNEL

Li Deshun; Li Zhiyuan; Liu Leilei; Li Rennian

doi:10.19912/j.0254-0096.tynxb.2022-1084

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (11) : 263-269. DOI: 10.19912/j.0254-0096.tynxb.2022-1084

EXPERIMENTAL STUDY ON LOAD CHARACTERISTICS OF COUNTER-ROTATING DOUBLE-WIND TURBINE WIND TURBINE IN WIND TUNNEL

Li Deshun^1~3, Li Zhiyuan¹, Liu Leilei¹, Li Rennian^1~3

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Abstract

In order to elucidate the load influence law between the front and rear wind turbines of a counter-rotating twin-wind turbine, the paper is based on wind tunnel experiments to measure the forces and moments in three orthogonal directions of a counter-rotating twin-wind turbine, and to study the influence law of the front and rear wind turbine spacing and the tip speed ratio on the load characteristics. It is found that the yaw moment of the single wind turbine fluctuates significantly at high tip speed ratios, while the yaw moment of the counter-rotating twin-wheel wind turbine decreases and the fluctuation is weakened; the change of the pitch of the counter-rotating twin-wheel wind turbine affects the load share of the front and rear wind turbines, and the load share of the rear wind turbine decreases with the increase of the pitch, which is due to the complex flow and turbulence structure generated between the front and rear wind turbines; the thrust of the front and rear wind turbines, the tilting Although the tilting moment of the front and rear wind turbines decreases with the increase of the tip speed ratio, the tilting moment and yawing moment of the front and rear wind turbines are in opposite directions, which indicates that the front and rear wind turbines of the counter-rotating dual-wind turbine have the effect of counteracting the tilting moment and yawing moment to a certain extent.

Key words

wind turbine / wind tunnel experiment / aerodynamic load / tip speed ratio / double-turbine wind turbine

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Li Deshun, Li Zhiyuan, Liu Leilei, Li Rennian. EXPERIMENTAL STUDY ON LOAD CHARACTERISTICS OF COUNTER-ROTATING DOUBLE-WIND TURBINE WIND TURBINE IN WIND TUNNEL[J]. Acta Energiae Solaris Sinica. 2023, 44(11): 263-269 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1084

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