STUDY ON EFFECTS OF BLADE FLEXIBILITY ON AERODYNAMIC PERFORMANCE OF 15 MW CLASS FLOATING WIND TURBINE UNDER SURGE CONDITION

Ma Lu; Zhou Le; Zhang Xianfeng; Lei Xiao; Shen Xin; Du Zhaohui

doi:10.19912/j.0254-0096.tynxb.2024-0186

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (6) : 667-675. DOI: 10.19912/j.0254-0096.tynxb.2024-0186

STUDY ON EFFECTS OF BLADE FLEXIBILITY ON AERODYNAMIC PERFORMANCE OF 15 MW CLASS FLOATING WIND TURBINE UNDER SURGE CONDITION

Ma Lu¹, Zhou Le², Zhang Xianfeng¹, Lei Xiao¹, Shen Xin^2,3, Du Zhaohui^2,3

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Abstract

For large floating wind turbines, the effects of blade flexibility on wind turbine performance cannot be ignored. Based on lift-line free vortex wake model and geometrically exact beam theory model, the effects of blade flexibility on the aerodynamic performance of IEA-15 MW wind turbine is studied in this paper. The results show that the additional velocity brought by the platform's surge motion will change the inflow velocity of the wind turbine, thus causing the fluctuate of wind turbine loads. Compared with the fixed condition, the output power of the wind turbine is increased under the surge condition, while the wind turbine's load is decreased after considering the flexibility of the blade. In addition, there is a delay in the response of the wind turbine's loads to the change of the inflow velocity under surge condition, and the additional velocity caused by the flexible deformation of the blades will aggravate the delay of the load response.

Key words

offshore wind turbines / aerodynamics / deflection / free vortex wake model / geometrically exact beam model

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Ma Lu, Zhou Le, Zhang Xianfeng, Lei Xiao, Shen Xin, Du Zhaohui. STUDY ON EFFECTS OF BLADE FLEXIBILITY ON AERODYNAMIC PERFORMANCE OF 15 MW CLASS FLOATING WIND TURBINE UNDER SURGE CONDITION[J]. Acta Energiae Solaris Sinica. 2025, 46(6): 667-675 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0186

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