An uncompressible steady 2-D annular backstep flow is computed under the three Re number.The results are compared with the correlative value in the literature and get the relatively satisfied outcome.

• 计算了三种不同雷诺数下二维环形通道后掠台阶的不可压缩定常流动，并与文献的相关量进行了比较，取得了较为满意的结果。