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应用拓扑原理分析了叶顶相对间隙为 0 .0 2 3和 0 0 36的涡轮直叶栅和正、反弯叶栅的壁面流谱 ,发现在两种间隙下同类叶栅的拓扑与旋涡结构在叶顶和吸力面壁角明显不同 ,探讨了差别形成的机理及其对能量损失的影响
The topological and vortex structures of the turbine cascade and the right and theft cascades with relative blade tip clearances of 0.023 and 0.036 are analyzed by using the topology theory. The difference between the top and the suction surface is obviously different, and the mechanism of the difference formation and its effect on energy loss are discussed