基于无网格MPS方法数值分析方舱破舱进水问题  

Numerically simulated flooding of a freely-floating two-dimensional damaged square ship section using MPS method

作　　者：卢泽宇 万德成[1] LU Zeyu;WAN Decheng(Computational Marine Hydrodynamics Lab(CMHL),School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学船海计算水动力学研究中心(CMHL)船舶海洋与建筑工程学院,上海200240

出　　处：《海洋工程》2022年第5期68-77,共10页The Ocean Engineering

基　　金：国家自然科学基金资助项目(52131102,51879159);国家重点研发计划资助项目(2019YFB1704200)。

摘　　要：采用移动粒子半隐式法(moving particle semi-implicit,简称MPS)对自由漂浮二维方舱的破舱瞬时进水过程进行数值模拟。首先,采用基于GPU平台自主开发的MPS软件模拟破舱进水问题,并与其他方法得到的数值模拟结果进行对比验证。然后,对该二维方舱的各种模型进行了数值模拟,其中开孔位于不同位置以表示舷侧不同高度下的损坏。此外,还研究了不同类型的挡板对破舱进水后方舱稳定性的影响。结果表明损坏的孔洞和内部挡板会影响损坏舱段的运动特性,开孔距静水面的距离越大引起舱段的横摇等运动幅度越大,垂直挡板比水平挡板对舱内洪水的影响更大。Moving particle semi-implicit(MPS)method was used to numerically simulate the transient flooding process of a freely floating two-dimensional damaged square ship section.First,MPS method was developed by GPU parallel acceleration technique.This technique was verified via simulations.Then,numerical flooding simulations were performed for various models of this ship section,where a hole was located at different positions to represent broadside damage.In addition,flooding simulations were carried out with baffles located inside the damaged ship section.The damaged hole and the internal baffles affected flooding and motion characteristics of the damaged ship section.Greater distance of the hole from the calm water surface caused larger motions.Vertical baffles had a greater influence on flooding than that from the horizontal baffles.

关 键 词：进水 方舱破舱 MPS方法 内部挡板 船舶受损 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]