基于CFD的舰船遭遇畸形波数值模拟的验证研究

Research on numerical simulation of ship encountering with freak waves based on CFD and its validation

畸形波对船舶航运极具威胁,已引发多起海上事故,因此有必要对舰船遭遇畸形波进行数值模拟研究。该文基于随机波浪的Longuet-Higgins模型,在相位调制方法的基础上考虑了航速航向的影响,调制部分组成波的初相位,可以实现舰船定时定点遭遇畸形波。在此基础上,利用CFD方法对舰船顶浪态势下遭遇畸形波进行数值模拟,并将结果与水池实验值进行比对,验证了文中所建模型的有效性,对于研究舰船在极恶劣海况下的耐波性及完善船舶设计规范等具有不可忽视的意义。

Freak waves have been extraordinary threat to ship transportation and have led to more than one maritime accident,it is necessary to research on the numerical simulation of ship encountering with the freak waves.Base on the Longuet-Higgins wave model theory,the ships can encounter freak waves at the appointed time and position by modulating the partly initial phase with taking the navigation course and speed into account.Then the numerical simulation of ship encountering with freak was completed with the CFD(computational fluid dynamics),the effectiveness of the model was demonstrated by comparing the results of the numerical simulation with the experiments*results.It is very important to research on the ship seakeeping in very inclement sea conditions and consummate the ship design specifications.