The numerical simulation is carried out and the sauter mean diameter and the axial and radial size distribution of droplet of round jets and annular jets were obtained . numerical results are in good agreement with experimental data 针对hy911圆柱形射流和环形射流，计算出雾化液滴sauter平均直径以及轴向和径向液滴尺寸分布，计算结果与实验数据吻合较好。
