ON THE DESIGN OF IMPELLER VANES OF CENTRIFUGAL PUMPS

Abstract

Empirical relations are employed in this paper to select blade (vane) angles, number and shapes for centrifugal pump impellers. A review of both the inlet and exit conditions of fluid in an impeller is given. Using Pearsall’s optimum inlet radius [Formula: see text] at the suction eye, together with Pfleiderer’s equation governing the number of vanes per impeller [Formula: see text] and the equation for slip (7.3), the whole geometry of the impeller can be defined.