The roll phenomena of a damaged ship in head waves were investigated using computational fluid dynamics. The RANSE-based computational model with the volume of fluid method was used to solve the ship-wave interactive dynamics. A dynamic mesh strategy, which combines the sliding interface, dynamic layering and diffusion-based smoothing techniques, was employed to efficiently update the mesh following the coupled heave-roll-pitch motions of a damaged ship. First, the benchmarking test of free motions of a damaged frigate in regular head waves was performed to validate the present method. The frigate's motion responses agreed with the experimental counterparts. Then, a series of head wave scenarios where the frigate was in a damaged condition and in an intact condition with or without internal water were simulated. A discussion highlighted the main factors (e.g., wave period, geometry asymmetry and floodwater motion) that affected the ship loads and motion responses, aiming to explain the mechanism underlying a damaged ship rolling in head seas.

使用计算流体动力学研究了受损船舶在顶浪中的横摇现象。采用基于RANSE的流体体积法计算模型求解船波相互作用动力学问题。结合滑动界面、动态分层和基于扩散的平滑技术的动态网格策略被用来根据受损船舶的耦合升沉-横摇-俯仰运动有效地更新网格。首先，对受损护卫舰在常规头波中的自由运动进行了基准测试，以验证本方法。护卫舰的运动响应与实验对应物一致。然后，模拟了一系列护卫舰处于损坏状态和完整状态，有或没有内水的迎波情景。