RESEARCH ON HYDRODYNAMICS OF FOUNDATION STRUCTURE OF OFFSHORE WIND TURBINE UNDER TYPHOON-WAVE-CURRENT COUPLING

Wang Shuo; Ke Shitang; Zhao Yongfa; Yun Yiwen; Zhang Wei; Yang Jie

doi:10.19912/j.0254-0096.tynxb.2021-0342

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (10) : 218-228. DOI: 10.19912/j.0254-0096.tynxb.2021-0342

RESEARCH ON HYDRODYNAMICS OF FOUNDATION STRUCTURE OF OFFSHORE WIND TURBINE UNDER TYPHOON-WAVE-CURRENT COUPLING

Wang Shuo^1,2, Ke Shitang^1,2, Zhao Yongfa¹, Yun Yiwen¹, Zhang Wei¹, Yang Jie¹

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Abstract

To disclose hydrodynamic characteristics of the foundation structure of wind turbine under typhoon-wave-current coupling action, a 10 MW super-large offshore wind turbine in Wailuo Wind Farm, Guangdong was chosen as a research object and a real-time meso-scale WRF-SWAN-FVCOM （W-S-F） coupling simulation platform was constructed by using Model Coupling Toolkit （MCT）. The spatial-temporal evolution of typhoon-wave-current in the offshore wind farm was simulated when a super typhoon “Ramason” passed through. Next,the hydrodynamic load distribution characteristics of the single pile foundation of wind turbine were analyzed by combining the meso-micro scale nested method. The extreme load model of the foundation piles under different wave phases was proposed. Results demonstrate that the constructed W-S-F platform increases the simulation precision of typhoon path by 42.51% than single WRF model. Under the coupling action of typhoon-wave-current, the positive peak value of the horizontal wave force of the foundation column increases by about 20%, and the negative peak value decreased by about 18%. The wave force changes exponentially along the direction of the water depth, and the circumferential wave force is symmetrical along the 180° wave angle. The T4 phase is the most adverse phase for the design of the wind turbine foundation strength, with the maximum base shear force of 7.68E6 magnitude and the maximum base bending moment of 5.2E8 magnitude.

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typhoon-wave-current coupling / offshore wind turbines / meso-micro scale / hydrodynamic load characteristics

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Wang Shuo, Ke Shitang, Zhao Yongfa, Yun Yiwen, Zhang Wei, Yang Jie. RESEARCH ON HYDRODYNAMICS OF FOUNDATION STRUCTURE OF OFFSHORE WIND TURBINE UNDER TYPHOON-WAVE-CURRENT COUPLING[J]. Acta Energiae Solaris Sinica. 2022, 43(10): 218-228 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0342

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