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海洋内波是发生在密度分层海水中的波动,对潜艇航行的稳定性和悬停性都有重要影响。本文采用有限体积自适应半结构多重网格法求解Navier-Stokes方程,并用VOF(Volume of Fluid)方法追踪两层流体界面,应用双推板造波法进行内孤立波数值造波,对两层流体中的内孤立波数值造波方法进行研究和探讨。数值模拟结果证实了该数值水槽数值造波的有效性和可靠性,并将潜艇放入数值水槽中,研究内孤立波流场演化的过程,为后续研究潜艇的水动力学特性打下了基础。
Internal waves are fluctuations that occur in densities of densities and have a significant impact on the stability and hovering of submarines. In this paper, Navier-Stokes equations are solved by finite volume adaptive semi-structured multigrid method, and the interface between the two fluids is tracked by VOF (Volume of Fluid) method. The internal wave solitary wave in the fluid is studied and discussed. Numerical simulation results confirm the validity and reliability of numerical wave making in this sink. The submarine is put into a numerical tank to study the evolution of the internal solitary wave flow field, which lays the foundation for the subsequent study on the hydrodynamic characteristics of the submarine.