中文摘要：

利用自主研发的CIP-ZJU（Constrained Interpolation Profile Method in Zhejiang University）高精度数学模型研究强非线性自由表面流动问题.模型在直角坐标系统下建立,采用紧致插值曲线CIP方法作为流场的基本求解器,通过多相流的方式实现固-液-气耦合同步求解,采用平衡格式的VOF（VOF/WLIC：Volume of Fluid/Weighted Line Interface Calculation）自由面捕捉方法改进了原模型,利用浸入边界方法处理运动物体.利用改进的CIP模型开展了不同类型的物体冲击液面引起的液滴飞溅现象的数值模拟,重点分析液滴飞溅过程中的自由液面变形、作用荷载和物体位置等.通过数值结果与实验结果的比较验证模型的可靠性.结果表明：平衡格式的VOF自由面捕捉方法能更精确地重构自由面,本文的数学模型可精确预测强非线性自由表面流动问题.

英文摘要：

A muhiphase model CIP-ZJU （Constrained Interpolation Profile Method in Zhejiang University） is developed, which is applicable of simulating free surface flow including liquid splashing, wave breaking and overturning. Numerical simulations are performed with a Constrained Interpolation Profile（CIP）-based method adopted as the base flow solver combined with an enhanced VOF （ Volume of Fluid） type scheme as free surface capturing method. To assess the algorithm and its versatility, drop impact onto flat liquid film and water entry of cylinders are simulated. Good agreement is obtained in comparing computational results with experimental data. It is demonstrated that many typical features in complex flow patterns can be captured in the present numerical model.