中文摘要：

本文采用数值模拟的方法对某低速压气机静叶流道内的流动结构进行了研究。设计工况下，带根部间隙的静叶流道中主要存在三个大尺度旋涡结构，分别为上通道涡、刮削涡和集中脱落涡，这些涡系在生成和发展过程中相互作用，流道内总奇点数先增加后减小，但都严格遵循了流道奇点数拓扑法则。

英文摘要：

Numerical investigation of flow structure was done in a low speed axial compressor＇s stator passage. There are three large vortexes exist in the stator passage with blade hub tip at design condition. They are the passage vortex at up side, the scraping vortex near hub tip and the concentrated shed vortex. These vortexes interact each other at their generation and development proceeding. The total number of singular points increases at first and decreases at last. But it obeys the rule of singular points number in the passage.