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Aero-Hydrodynamic Coupled Dynamic Characteristics of Semi-Submersible Floating Offshore Wind Turbines Under Inflow Turbulence

查看全文 作　　者：JIANG Hai-[1,2]rui;BAI Xing-[1,2]lan;Murilo [3]A.VAZ 高影响力作者 机构地区：[1]School of Naval Architecture and Maritime,Zhejiang Ocean University,Zhoushan 316022,China;[2]Key Laboratory of Offshore Engineering Technology of Zhejiang Province,Zhoushan 316022,China;[3]Ocean Engineering Program,Federal University of Rio de Janeiro,Rio de Janeiro,Brazil高影响力机构 出　　处：《China Ocean Engineering》索引2023年第37卷第4期,共13页高影响力期刊 基　　金：supported by the Natural Science Foundation of Zhejiang Province(Grant No.LHZ21E090003);the National Nature Science Foundation of China(Grant No.52171279);Zhoushan Science&Technology Project(Grant No.2021C21002);supported by CNPq(Conselho Nacional de Desenvolvimento Científico e Tecnológico,Grant No.301474/2017-6). 摘　　要：In this study,the frequency characteristics of the turbulent wind and the effects of wind-wave coupling on the low-and high-frequency responses of semi-submersible floating offshore wind turbines(FOWT)are investigated.Various wave load components,such as first-order wave loads,combined first-and second-order difference-frequency wave loads,combined first-and second-order sum-frequency wave loads,and first-and complete second-order wave loads are taken into consideration,while different turbulent environments are considered in aerodynamic loads.The com-parison is based on time histories and frequency spectra of platform motions and structural load responses and statistical values.The findings indicate that the second-order difference-frequency wave loads will significantly increase the natural frequency of low-frequency motion in the responses of the platform motion and structure load of the semi-submersible platform,which will cause structural fatigue damage.Under the action of turbulent wind,the influences of second-order wave loads on the platform motion and structural load response cannot be ignored,especially under extreme sea conditions.Therefore,in order to evaluate the dynamic responses of semi-submersible FOWT more accurately,the actual environment should be simulated more realistically. 关 键 词：turbulence characteristics floating offshore wind turbines second-order hydrodynamic loads low-and high-frequency responses aero-hydrodynamic coupling
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