基于CFD技术的隐身舰船波浪中横摇运动研究

Research on transverse motion of tumblehome hull in waves based on CFD technology

为分析隐身舰船在迎浪中的横摇运动,通过数值水池的方法建立舰船在波浪中的运动仿真模型,分析舰船在波浪中大幅值横摇的形成过程,得到舰船横摇与航速、波陡的相应关系。同时对隐身舰船常见的甲板上浪现象进行数值仿真,分析甲板上浪对舰船运动的影响。结果表明隐身舰船在迎浪中会出现大幅值的横摇,即参数横摇现象,且甲板上浪对舰船横摇有一定的抑制作用。上述研究结论表明,采用CFD方法可以对舰船在波浪中的大幅值、强非线性运动进行准确模拟,对舰船的运动有一定的参考意义。

In order to analyze the transverse motion of tumblehome hull in waves, by using numerical tank, a simulation to describe the motion of hull in waves was established, and the formation process of rolling amplitude was analyzed,and the corresponding relationship between rolling amplitude and speed and wave height was obtained. At the same time, numerical simulation was carried out to analyze the influence of green water. The results show that roll with high amplitude will appear when tumblehome hull sailed in waves, which is, the parametric roll. The results show that the CFD method can accurately simulate the large amplitude and strong nonlinear motion of the hull in waves, which has certain significance for the hull motion.