将大涡模拟法简化为二维形式 ,利用 SGS格子涡模型封闭二维 Navier- Storkes方程水流运动方程组 ,得到平底振荡流边界层立面二维水流数值模型 ,控制方程采用 SMAC法求解 .计算结果与水槽实验的实测资料比较表明 ,该模型能够模拟振荡流边界层流动特性 .并进一步讨论了振荡流边界的紊动特性沿垂线分布和随相位变化的情况 . The large eddy simulation method is simplified to two-dimensional form, and the two-dimensional Navier-Storkes equation flow equations are closed by SGS lattice vortex model to obtain two-dimensional flow numerical model of flat bottom oscillating flow boundary layer. The governing equation is solved by SMAC method. The results show that this model can simulate the flow characteristics of the boundary layer of the oscillating flow, and further discuss the distribution of turbulence along the vertical line and the phase change with the oscillating flow.