遠心羽根車における中間羽根の影響 : 第1報, 翼間流れの変化

概要

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To examine the effect of the splitter blade on the centrifugal impeller, flow measurements using a five-hole pressure probe were made in an unshrouded and a shrouded impeller which have 20 blades with 10 splitter blades. Both main and splitter blades are radial at the outlet. Results of these measurements were compared with those for the impellers removed splitter baldes. In the pressure-sided passage of the splitter blade (A passage), the wake positions are similar to those in the unshrouded and the shrouded impeller removed splitter blades, respectively. In the suction-sided passage of the splitter blade (B passage), the wake occurs on the suction surface. Therefore, relative velocity near the suction surface in the B passage of the shrouded impeller decreases considerably. In the B passage of the unshrouded impeller exit, however, the relative velocity is smallest at the middle blade-to-blade position near the casing, because of the leakage flow at the splitter blade tip.
社団法人日本機械学会の論文
1991-02-25