内孤立波与潜艇相互作用的水动力学特性

为了研究海洋内孤立波与潜艇的相互作用，采用有限体积自适应半结构多重网格法求解Navier-Stokes方程,应用双推板造波法模拟内孤立波数值水槽,并将潜艇SUBOFF模型放置于数值水槽中,研究航行的潜艇在海洋中遭遇内孤立波时的流场形态和受力载荷特性。研究结果表明:潜艇在穿越孤立波时在垂向和水平方向的受力都会在短时间内发生巨变,力矩的突变也有可能使潜艇发生倾覆,同时还可能会产生强大的冲击载荷而导致其破损。

Hydrodynamic properties of interactions of three dimensional internal solitary waves with submarine

The hydrodynamic property of the interactions of three dimensional internal solitary waves with a submarine was studied.The finite volume algorithm with adaptive semi structure grids, multi grid method and the volume of fluid (VOF) method were used to solve the Navier Stokes equations. A numerical internal solitary wave tank was developed, based on the idea of pushing two plates in opposite directions in the tank, with the ability of wave generation. A submarine model (SUBOFF) was put in the numerical tank to study the properties of the flow field and the load of the submarine when it meets the internal solitary waves. The results show that when a submarine goes through solitary waves, the forces in the vertical and horizontal directions are changed tremendously, and the sudden change of the moment of the force is likely to cause the submarine keel over, and destructive damage of the submarine by large impulsive forces.