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本文采用Ｋε紊流模式和体积率（ＶＯＦ）跟踪自由水面的方法，模拟了闸后水跃的水流结构，并与试验进行了比较，计算结果与试验资料基本吻合．通过体积率函数更新流场空间点的密度分布，描述、显示了水跃区的掺气现象和水面波动状态．
In this paper, the Kε turbulence model and the volume rate (VOF) are used to track the free surface. The water flow structure after the sluice is simulated and compared with the experimental results. The calculated results agree well with the experimental data. The volume distribution function is used to update the density distribution of the spatial points in the flow field to describe and show the aeration phenomenon and the water surface fluctuation in the hydro-leap zone.