考虑水介质作用的船冰碰撞解耦方法及载荷预报

Considering the action of the water medium in decoupling method and load forecast of the ship ice collision

考虑水介质在船冰碰撞过程中水压变化的影响,是模拟水介质中船-冰碰撞的关键。本文开展数值模拟的动网格技术研究,基于RANS方程和改进的双相流流体体积函数VOF,实时预报船冰靠拢全过程中船体表面、冰体表面的压力变化情况。得到船体表面、冰体表面的P(V)函数。进而将水介质对船冰碰撞载荷的影响简化为对船体、冰体碰撞面预加载荷来实现,达到解耦目的。

The influence of water medium on the change of water pressure during the ship collision ice is the key to consider the collision of ship-to-ice in water medium. This paper carried out the numerical simulation of the dynamic grid technology research, based on RANS equations and improved VOF two-phase flow fluid volume function, and the real-time prediction of ship and ice surface pressure changes in the close process. Get the P（V） function on the ship and ice surface.Furthermore, the effect of the water medium on the load of the ship ice collision is simplified to realize the decoupling purpose by means of the preloading load of the hull and ice body.