波浪载荷作用下浮式风机平台基础设计及运动响应研究

Research on the Design and Motion Response of Floating Wind Turbine Platform under Wave Load

针对漂浮式海上风力机在复杂恶劣的外部环境及载荷下其结构安全性能难以保证等问题,文章结合经典半潜浮式平台(5MW OC4-DeepCwind)的结构特性,研发了一种可以提高消波、吸波性能的带透孔的筒状消波装置,通过在平台周围立柱外围加装消波装置,对半潜浮式平台进行优化设计,并从数值模拟出发,基于三维势流理论以及波浪原理,运用ANSYS-AQWA软件进行建模和时域对比性分析。研究结果表明,在一定海况下,加装消波装置后在横摇、纵摇自由度上具有显著的减摇效果,对其他自由度运动影响较小。因此,加装消波装置对半潜浮式平台的摇晃抑制及优化平台整体水动力性能具有明显效果。

In response to the issue of unstable performance of floating offshore wind turbines in complex and harsh external environments and loads,the article develops a cylindrical wave absorber with a through hole that can enhance wave absorption according to the structural characteristics of the classical semi-submersible floating platform,and optimizes the absorber by installing a wave absorber on the periphery of the columns around the platform,,which is modeled and analyzed by ANSYS AQWA software based on three-dimensional potential flow theory and wave principle.The research results indicate that under certain sea conditions,the installation of a wave absorber exerts a significant anti-rolling effect on the roll and pitch degrees of freedom,and has little impact on the motion of other degrees of freedom.Therefore,it's concluded that the installation of wave absorber has a positive effect on the rolling suppression and optimization of the overall hydrodynamic of the semi-submersible floating platform.