基于Spar平台的海上大型漂浮式垂直轴风力机气-水-系泊动力学耦合分析OA

Floating vertical axis wind turbines(VAWTs)are still in the early stages of development,lacking dedicated platform designs and insufficient research on their aerodynamic-hydrodynamic coupling.To investigate the dynamic response characteristics of floating VAWTs under combined wind and wave loads,this study focuses on a Spar-type VAWT,which is currently in the technological exploration and engineering validation phase.A full-scale numerical model of a large floating VAWT based on the Spar platform is established,and computational fluid dynamics(CFD)methods are employed to study the coupled aerodynamic-hydrodynamic-mooring dynamics under wind-wave conditions.The results show that,under wind-wave loads,floating VAWTs exhibit a higher average power coefficient than fixed-bottom VAWTs,but with more intense fluctuations in the power coefficient response.The lateral force generated by rotor rotation under wind loads increases the sway amplitude,leading to alternating,opposing oscillation patterns in mooring lines 2 and 3.Additionally,the pitch response significantly affects the power coefficient and wake characteristics of floating VAWTs.