遠心羽根車の翼面負荷とすべり係数の表示式

抄録

A simple equation for expressing the blade loading of an impeller and a modified Wiesner's slip formula taking account of this blade loading are presented. The performance of four different types of impeller with the same exit diameter, blade exit width, and number of blades was tested. Further, the slip factor of all impellers were measured by using a three hole pitot probe. The slip of the impeller was affected by the blade loading, especially by the meridional distribution of blade angle. A modified Wiesner's formula showed a better prediction of the slip factor of the impeller.