考虑流场影响下破冰船艏部结构响应研究

通常考虑船-冰碰撞附连水的水动力效应有附加质量法和流固耦合法。本文建立了破冰船破冰场景,基于流固耦合法进行了数值仿真计算,分析了水域流场对船体的冲击压力变化、流场的速度分布变化以及流场的动能变化。同时与附加质量法的计算结果进行了比较,对比分析了船艏的碰撞力大小、损伤变形以及局部冰载荷等差异,揭示了流场对船-冰碰撞的影响规律,对于破冰船结构设计具有重要的参考价值。

Study on the structural response of the icebreaker bow considering the influence of the fliud field

The hydrodynamic effects of ship-ice collision attached water are usually considered to have additional mass methods and fluid-structure interaction methods. In this paper, the ship icebreaking scene is established. Based on the fluid-structure interaction method, the numerical simulation is carried out. The impact pressure of the water field on the bow, the velocity distribution of the fluid field and the kinetic energy of the fluid field are analyzed. At the same time, compared with the calculation results of the additional mass method, the differences of the collision force, damage deformation and local ice load of the bow are compared and analyzed. The influence of the fluid field on the ship-ice collision is revealed, which is important for the structural design of the icebreaker.