气动载荷对半潜式海上风机运动响应的影响分析

以DeepCwind海上风机为研究对象,利用有限元软件ANSYS AQWA进行风机频域水动力数值仿真分析,得到水动力参数以及幅频响应曲线,将得到的水动力参数导入到FAST软件中,对风机气动-水动-锚泊系统的时域耦合运动分析。在此基础上,讨论了气动载荷对于半潜式风机运动响应的影响。结果表明,气动载荷对于半潜式风机运动响应的影响较大且不可忽略,横摇,横荡以及首摇运动随着气动载荷的增大而增大,垂荡运动随着气动载荷的增大而减小,风作用在叶片上所产生的气动阻尼削弱了垂荡运动,增强了横荡、横摇和首摇运动。

Research on the Influence of Aerodynamic Load on the Motion Response of Semi-submersible Floating Offshore Wind Turbine

The DeepCwind floating wind turbine is taken as the research object, numerical simulation of hydrodynamics in frequency domain of DeepCwind is based on ANSYS AQWA and the hydrodynamic parameters and amplitude-frequency response curves are obtained, the obtained hydrodynamic parameters are imported into FAST software. The coupled time-domain motion analysis of DeepCwind aerodynamic-hydrodynamic-mooring system is realized by using FAST software. On this basis the influence of aerodynamic load on the motion response of semi-submersible floating offshore wind turbine is compared and analyzed. The results show that the influence of aerodynamic load on the motion response of semi-submersible floating offshore is large and cannot be ignored and the sway, roll and yaw motion increase with the increase of aerodynamic load, while the heave motion decreases with the increase of aerodynamic load, the aerodynamic load has a great impact on the sway,roll and yaw motion of the platform and weakens the heave motion.