The dual time step procedure is used to simulate the unsteady flow through a one-stage compressor, and the result reveals that there are complex unsteady flow structures in the blade passage.

• 上游叶片排尾迹对下游叶片通道流动影响很大，它增加边界层损失，并在通道中与主流发生强烈掺混，最终使得出口流场及损失分布较为均匀。