应用VOF方法的水平圆柱入水数值模拟  

Numerical simulation of water-entry in a horizontal circular cylinder using the volume of fluid(VOF) method

作　　者：陈宇翔[1] 郜冶[1] 刘乾坤[1] 

机构地区：[1]哈尔滨工程大学航天与建筑工程学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2011年第11期1439-1442,共4页Journal of Harbin Engineering University

基　　金：国家自然科学基金资助项目(50374018)

摘　　要：为了研究水平圆柱砰击入水问题,建立了数值水池,应用VOF结合动网格技术的方法对零浮力水平圆柱入水过程的气液两相流动和刚体运动耦合的问题进行了数值模拟.捕捉了圆柱入水过程中射流的形成、运动和空气垫效应等自由表面的变化现象,模拟了圆柱竖直运动过程;讨论了湍流粘性对圆柱入水的影响.结果表明:圆柱入水的数值模拟结果和实验数据符合很好;圆柱运动轨迹同样和实验吻合;湍流粘性对圆柱入水过程影响很小.In order to study the slamming problem of a horizontal circular cylinder,a numerical water tank was set up.While water was entering a neutrally buoyant circular cylinder,the volume of fluid（VOF） method coupled with the dynamic mesh method was used to simulate the liquid-gas multiphase flow and the cylinder motion.Free surface deformation such as jet formation,movement,and the air cushion effect was captured;vertical motion of the cylinder was predicted and the turbulent effect of the water-entry into the cylinder was discussed.Favorable agreement was obtained between computational results and the datas of the experiments.The cylinder motion was also predicted accurately by the computation and the turbulent effect was not significant during the water-entry into the cylinder.

关 键 词：VOF方法 动网格 入水冲击 圆柱 

分 类 号：U663.2[交通运输工程—船舶及航道工程]