计算力学学报2017，Vol.34Issue(3)：356-362,7.DOI:10.7511/jslx201703013
MPS方法数值模拟楔形体入水问题
Numerical simulation of water entry for two-dimensional wedge by MPS
摘要
Abstract
Water impact has been a typical problem in ocean engineering.When a vessel sails in the ocean under serious conditions,slamming impact between the structure and water can be huge.The phenomena such as the drastic change of wetted region and the fragmentation and overturning of free surface will happen with the slamming.In this paper,an in-house mesh-free particle solver MLParticle-SJTU,which is developed based on improved moving particle semi-implicit (MPS) method,is employed to numerically simulate the water entry of a two-dimensional (2-D) wedge.The water entry of wedge model with its deadrise angle of 30° is simulated.The effects of two different layout method of particles on vertical force and deformation of free surface are investigated.And the results of MPS are in a good agreement with the results of MLM (Modified Logvinovich Model).In addition,the wedges with different deadrise angles is modeled to study its effects on vertical force and free surface.The agreement of vertical force before flow separation between MPS and MLM is very good which proves the validity of MPS in the research of water entry problems.关键词
MPS/二维楔形体/入水/不同粒子布置方式/不同斜升角Key words
MPS/2-D wedge/water entry/different layout methods of particles/different deadrise angles分类
数理科学引用本文复制引用
陈翔,饶成平,万德成..MPS方法数值模拟楔形体入水问题[J].计算力学学报,2017,34(3):356-362,7.基金项目
国家自然科学基金(51379125,51490675,11432009,51579145) （51379125,51490675,11432009,51579145）
长江学者奖励计划(2014099) （2014099）
上海高校特聘教授(东方学者)岗位跟踪计划(2013022) （东方学者）
上海市优秀学术带头人计划(17XD1402300) （17XD1402300）
工信部数值水池创新专项VIV/VIM项目(2016-23/09)资助项目. （2016-23/09）
