Wind-wave coupling effects on the fatigue damage of tendons for a 10 MW multi-body floating wind turbine

OCEAN ENGINEERING

卷:217

Article

Yang, Yang^1,4  Bashir, Musa¹  Wang, Jin¹  Michailides, Constantine²  Loughney, Sean¹  Armin, Milad¹  Hernandez, Sergio³  Urbano, Joaquin³  Li, Chun⁴ 

[1] Liverpool John Moores Univ, Offshore & Marine Loom Res Inst, Liverpool Logist, Byrom St, Liverpool L3 3AF, Merseyside, England

[2] Cyprus Univ Technol, Dept Civil Engn & Geometr, Saripolou 2-8, CY-3036 Limassol, Cyprus

[3] ESTEYCO SA, Offshore Div, Menendez Pidal 17, Madrid 28036, Spain

[4] Univ Shanghai Sci & Technol, Sch Energy & Power Engn, Shanghai 200093, Peoples R China

关键词: Multi-body platform;    Floating wind turbines;    ARCWIND;    Aero-hydro-servo coupled method;    Fatigue analysis;    Tendons;   

DOI  :  10.1016/j.oceaneng.2020.107909

来源: Elsevier

【 摘 要 】

This study investigates the wind-wave coupling effects on fatigue damage of tendons that connect multiple bodies of a novel floating platform (TELWIND) supporting a 10 MW wind turbine. An aero-hydro-servo tool is developed for dynamic analysis of a multi-body floating wind turbine (FWT) platform, by incorporating AeroDyn with AQWA through a user-defined dynamic library link (DLL) to conduct simulations of the FWT subjected to wind, wave and current loadings. The comparison against FAST has validated the accuracy of the AQWA-AeroDyn coupling framework in predicting coupled responses of the FWT. A specific site in the northern coast of Scotland is selected and design load cases are examined for the estimation of the fatigue damage of the tendons of the FWT. In the absence of wind-wave coupling, the motion differences between the two bodies of the platform are larger, leading to 43.7% enhancement in the tension fluctuation of tendons in average. Consequently, the fatigue damage of the tendons is significantly overestimated. Also, the investigation on the influence of effective simulation length on the fatigue damage shows that 90% accuracy can be achieved when 20% of the simulation analysis length is decreased.

【 授权许可】

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