两浮体在波浪中二阶漂移力的三维方法研究

On second order drifting force of two floating bodies in wave by 3-D method

基于三维频域线性理论采用近场方法研究波浪中两浮体之间二阶漂移力(矩)的相互干扰,建立了两船相隔一定间距在波浪中运动的二阶漂移力(矩)的数学模型。经过数学换算,浮体的二阶漂移力(矩)可用入射速度势和扰动分布源简单表示。通过对固结的两船在横浪中的二阶横向漂移力及首摇漂移力矩的计算,得出结论与试验结果作比较,两者吻合度较好。

Based on 3-D frequency domain linear theory, the near field method is adopted to study the interference of two order floating force （moment） between two floating bodies in wave. The mathematic model of two order floating force （moment） of two ships moving in wave at a certain distance has been set up. With mathematic conversion, the two order floating force （moment） of floating bodies can be indicated by incident velocity potential and disturbed distribution source in brief. The calculation result about two order lateral floating force and yawing floating force of two ships fixed in lateral wave shows that it is in accordance with that of the test performance.