Level-set法预报液舱内剧烈晃荡引起的冲击压强(英文)  

Level-set Method for Predicting Impact Pressure Induced by Violent Sloshing in a Tank

作　　者：朱仁庆 方智勇[2] 张照钢[1] 陈正云[1] 

机构地区：[1]江苏科技大学船舶与海洋工程学院,江苏镇江212003 [2]南通航运职业技术学院船舶工程系,江苏南通226000

出　　处：《船舶力学》2008年第3期344-351,共8页Journal of Ship Mechanics

基　　金：the National Natural Science Foundation of China (Grant No.10472032);China ship Industry Foundation (Grant No.04J1.4.4)

摘　　要：基于Level-set 法就部分装载液体的液舱内剧烈晃荡引起的冲击压强进行了二维数值计算。为了模拟大幅晃荡引起的冲击压强, 重点对数值计算较为敏感的自由液面处的物性参数、初始化方程的求解等进行了数值处理。通过对某一矩形液舱内的液体晃荡的计算, 得到了自由表面位置和压强的时间历经曲线。计算结果同实验值的比较表明: 本方法可以用于计算预报大幅晃荡引起的载荷。In this paper, a two-dimensional （2D） numerical simulation based on the Level-set method is performed for the simulation of violent flow in a partially filled tank. For modeling impact pressure induced by large amplitude sloshing, an emphasis is given to the numerical treatment of the free surface, which is sensitive to the simulation. Liquid sloshing inside a rectangular tank is simulated. The time histories of the free surface position and the dynamic pressure are obtained.The results are compared with the test ones.These comparisons show that the present method can be used to simulate the sloshing induced impact loads.

关 键 词：Level—set法 液体晃荡 冲击压强 

分 类 号：TV131.2[水利工程—水力学及河流动力学] U663.85[交通运输工程—船舶及航道工程]