研究新型组合弹性系泊对漂浮式风力机Spar平台动态响应及系泊张力特性的影响。建立基于OC3-Hywind Spar Buoy平台的NREL5 MW漂浮式风力机整机模型，综合考虑叶片空气动力载荷、平台的水动力载荷及平台与系泊系统的耦合。首先验证水动力学模型的可靠性，然后分析组合弹性系泊对动态响应及系泊张力的影响。结果表明：组合弹性系泊会使平台纵荡增大25.5%，但系泊张力、垂荡和纵摇却会分别减小14.0%、20%和18.1%；弹性索位置对动态响应及系泊张力影响不大；随弹性索长度的增加，平台纵荡响应增加34.0%，平台垂荡和系泊张力分别减小25.0%和7.3%。

The effects of combined elastic mooring on the dynamic response and mooring tension characteristic of spar platform for floating wind turbine are studied.The model for NREL 5 MW floating wind turbine is established based on OC3Hywind Spar Buoy platform.The blade aerodynamic load,the hydrodynamic load on the platform,and the coupling action between the platform and the mooring system are considered.Firstly,the reliability of the hydrodynamic model is verified and analyzed.Then the effects of combined elastic mooring on the dynamic response and the mooring tension characteristic are analyzed.The results show that with the combination of elastic mooring,the surge motion response increases by 25.5%,while mooring tension,the heave and pitch response can be reduced by 14.0%,20% and 18.1%,respectively.The position of elastic cable has little influence on the dynamic response and mooring tension.With the increase in the length of the elastic cable,the surge increases by 34.0%,but the heave and mooring tension are decreased by 25.0% and 7.3%,respectively.

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国家自然科学基金资助项目（E51176129）；教育部高等学校博士学科点专项科研基金（博导）项目（20123120110008）上海市教育委员会科研创新（重点）项目（No.13ZZ120,13YZ066）