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本文采用直接解N-S方程和标准K-ε湍流模型方程的方法,模拟了一类二维强迫水跃的产生和发展过程,给出了水跃在发展的不同时刻的的自由表面形状和流速分布情况.计算结果较好地与试验结果符合.所编制的通用计算程序GRAFST可对一般的二维非定常带自由表面的湍流进行计算.
In this paper, the direct NS solution and the standard K-ε turbulence model equation are used to simulate the generation and development of a class of two-dimensional forced water jumps. The free surface shape and velocity distribution of water jump at different times of development are given The results are in good agreement with the experimental results.The generalized GRAFST program can be used to calculate the general two-dimensional unsteady turbulence with free surface.