聚焦波作用下立柱高阶波浪力特性研究

以方形立柱作为研究对象，对其在聚焦波作用下的波浪力特性进行研究。研究主要基于计算流体力学数值方法，对聚焦波作用下方形立柱在固定、单自由度纵荡、单自由度垂荡三种运动状态下所受波浪力进行研究。利用phase-inversion逆相位分解方法对其高阶力特性进行分析。首先对聚焦波生成方法、数值计算方法与参数设置进行简要介绍，其次展示了三种运动状态下立柱在聚焦波作用下所受波浪力，并对其进行分析，最后利用phase-inversion逆相位分解方法获得高阶波浪力成分并对其载荷特性进行分析讨论。研究发现逆相位分解方法可以有效分离波浪力高阶成分，不同运动状态下立柱所受波浪力会有显著不同。

Investigation on higher-order wave load of platform column due to focusing wave

In this study, a square column is taken as the research object, and the wave force characteristics under the action of focusing waves are studied. The research is mainly based on the computational fluid dynamics numerical method, and the wave force of the square column is studied under three kinds of motion states:fixed surging and heave with single degree. The higher-order force characteristics are analyzed by phase-inversion. Firstly, the focus wave generation method, numerical calculation method and parameter setting are briefly introduced. Secondly, the wave forces of the column under three kinds of motion states are shown and analyzed. Finally, the phase-inversion method is used to obtain the high-order wave force components, and the load characteristics are analyzed and discussed. It is found that the phase decomposition method can effectively separate the high-order components of the wave force, and the wave forces of the columns will be significantly different under different motion states.