采用二维轴对称网格、VOF方法和动网格技术对重力作用下半球头圆柱体垂直穿越气液界面过程的气液两相流和圆柱体运动耦合的问题进行了数值模拟,其中圆柱体运动速度由实验数据拟合而得.得到了圆柱体入水过程空泡的形成和闭合等气液界面的变化现象,以及圆柱体所受冲击载荷的变化过程.结果表明:圆柱入水的数值模拟结果与相应实验结果吻合较好;面闭合、向下喷射对圆柱体所受入水冲击载荷有较大的影响.
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