中文摘要：

随着海上液化天然气的开采和卸载的发展．LNG船部分充满舱的晃荡问题变得非常重要．成为船舶力学研究热点课题。文中采用光滑质点水动力学方法对二维液舱内液体大幅晃荡问题进行了数值模拟。将计算得到的波面图与试验结果进行了对比．吻合较好．验证了此法处理大幅晃荡问题的可行性。

英文摘要：

With the development of offshore LNG production and offloading, sloshing of LNG in partially filled tanks has become an important research subject for the offshore industry. In this paper SPH（Smoothed Particle Hydrodynamics） method is used for the numerical simulation of large amplitude liquid sloshing in two dimensional liquid tanks. The computed wave surface profile is compared with experimental results, well in agreement. The feasibility of this method to be used to simulate large amplitude liquid sloshing is validated.