液舱内大幅晃荡引起的压强预报

摘要

A two-dimensional (2D) numerical simulation based on the volume of fluid (VOF) method is performed for predicting sloshing pressure in a partially filled liquid tank. For modeling impact pressure induced by large amplitude sloshing,an emphasis is given to the numerical treatment of the boundary conditions,which are sensitive to the simulation. Liquid sloshing inside a rectangular tank is simulated. The time history 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 load induced by large amplitude sloshing.%本文基于流体体积(VOF)法就部分装载液体的液舱内的晃荡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速度边界条件进行了数值处理.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显示:本方法可以用于计算预报大幅晃荡引起的载荷.