两圆柱体在波浪载荷作用下的运动响应分析

基于势流理论和波浪辐射/绕射理论,利用水动力分析软件(AQWA)研究两圆柱体在波浪作用下的运动响应特性,给出不同入射角与不同频率规则波作用下,小圆柱体单独运动时的六自由度响应幅值算子(RAOs)及运动响应,并与两个并排圆柱体六自由度响应幅值算子(RAOs)及运动响应作比较。结果表明:大圆柱体的干扰将使小圆柱体的纵摇、横摇、横荡、垂荡运动加剧,对小圆柱体漂移力也有较大影响,但对小圆柱体的纵荡与首摇运动影响不大。计算结果与传统方法计算值相近,证明此软件合理,可为两船在波浪中的干扰模拟计算提供参考。

Dynamic response of two floating parallel cylinders under wave loads

The dynamic response of two floating parallel cylinders in the wave is studied by hydrodynamic analysis software AQWA,which is based on potential theory and wave radiation/diffraction theory.The dynamic response and RAOs of a single cylinder in regular waves of different attack angles and different frequencies are calculated and compared with those of two parallel cylinders.The results show that due to the perturbations of the bigger cylinder,the pitch,roll,sway and heave of the smaller cylinder become stronger,but the surge and yaw have no obvious changes,and the drift forces of the small cylinder have been significantly influenced.The rationality of this software has been proved because the results are approximated to the calculations by traditional methods.It can be taken as reference in the simulation of the interactions between two ships in the wave.