Analysis of motion of a fin-attached floating structure using a vortex method

我们提出了一种鳍附加结构，以减少运动和波浪漂移的浮体结构安装在海上。作为第一步，测量了作用在自由水面下的摆动鳍上的水动力特性。提出了一种将水动力分解为附加质量、阻尼和粘性力的新方法。在传统的莫里森公式中加入兴波阻尼项。研究了运动周期和振幅的影响

We proposed a fin-attached structure to reduce motion and wave drift of a float structure installed on the sea. As the 1st step, the characteristics of hydrodynamic force acts on a oscillating fin under a free surface is measured. We propose a new method to decompose the hydrodynamic force into added mass, damping and viscous force. The wave making damping term was added to a conventional Morrison formula. The effect of the period and amplitude of motion are investigated