具有后部加载叶型的环形静叶栅的旋涡结构

The Vortex Structure of the Annular Static Cascades with Aft-loading Profile

为了详细研究具有后部加载叶型的环形静叶栅的流场结构,在环形叶栅低速风洞上对具有后部加载叶型的环形弯曲叶片静叶栅上、下端壁以及叶片型面进行了墨迹显示实验,同时应用拓扑学原理分析了叶栅的壁面流谱,并据此分析提出了本实验叶栅的二次流动的拓扑示意图。

For investigating the flow field structure of the annular static cascades with aftloading profiles, the technique of ink trace visualization were carried out on the low speed annular wind tunnel with the annular curved blades static cascades that have the aft-loading profiles, also investigates the topological structure of the flow pattern surrounding both endwalls and blade surfaces for the cascades, and give a schematic view of the secondary flow in these cascades based on the analysis.