1985•TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series BOpen access

Velocity distributions in the impeller passages of centrifugal pumps. Effects of outlet edge form of the impeller blades on the pump performance.

Koji KIKUYAMA, Mitsukiyo MURAKAMI, Eiji Asakura, Isao OSUKA, Jinsheng LIU

Abstract

遠心ポンプ羽根車の先端形状および先端の削除量を種々に変えたときのポンプの性能変化,羽根出口近傍の流れの変化について実験的に明らかにした.羽根前面あるいは後面の先端を削除すると,流出角度が変わるほか流路面積が増す.このため羽根出口における絶対速度の周方向成分が変化してポンプ揚程が変わる.この揚程変化量と羽根先端削除量との関係を実験的に示すとともに,理論的考察を行った.

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Key concepts: Impeller, Centrifugal pump, Rotodynamic pump, Specific speed, Slip factor, Mechanical engineering, Materials science, Mechanics