摘要： 为研究养殖工船养殖舱晃荡现象对舱壁结构强度和养殖安全的影响，采用光滑粒子流体动力学方法(SPH法)对横摇激励下养殖工船养殖水舱的轻微晃荡和剧烈晃荡进行数值模拟，通过引入动态边界粒子法解决SPH法固壁边界上或边界附近的粒子截断误差影响精度问题，并对动态边界粒子两种处理方法模拟结果与相关文献进行了对比分析，验证数值方法的有效性。结果显示：该方法可靠有效，适用于模拟养殖水舱晃荡时自由液面翻卷、破碎现象；对于轻微液舱晃荡现象，相比于边界粒子运动法，边界粒子固定不动法具有更高的计算精度；对于剧烈液舱晃荡现象，边界粒子运动法和边界粒子固定不动法则均能有效的数值模拟。本研究成果对于养殖工船养殖水舱晃荡现象数值模拟提供参考。

关键词: 养殖工船, 动态边界粒子, 晃荡, 横摇激励, 自由液面破碎

Abstract:  In order to study the influence of sloshing phenomenon of ballast tank on bulkhead structural strength of aquaculture vessels, the Smoothed Particle Hydrodynamics (SPH) method was used to simulate the slight sloshing and violent sloshing of ballast tank under rolling excitation. The influence of particle truncation error on or near the solid wall boundary of SPH method was solved by introducing dynamic boundary particle method. The simulation results of the two processing methods of dynamic boundary particles were validated by comparing with related literatures. The results show that the method used in this paper is reliable and effective, and is suitable for simulating the rolling and breaking of free surface during ballast tank sloshing. For slight tank sloshing, the boundary particle fixed method has higher calculation accuracy than the boundary particle motion method; both the boundary particle motion method and the fixed boundary particle method can effectively simulate the violent tank sloshing phenomenon. The results of this study can provide a reference for the numerical simulation of sloshing in the culture tanks of aquaculture vessels.

Key words: Dynamic boundary particle, sloshing, roll excitation, free surface crushing