Comparative Analysis of an Impeller Geometry at Different Heads of a Pump

Abstract

Impellers designing with ten blades at different heads of a hydraulic pump (from 5 to 25 m) by means of the Ansys Workbench software environment was carried out in the article. Three-dimensional models are presented and elements description of the radial impeller of the pump is given. Calculations of the impellers geometry were carried out at volume fluid flow rate (water) of 300 m 3 /h. Profiles and geometric dimensions of the impeller blades are obtained in the spans: 0 and 1. It is determined that the radial impellers are recommended to be used at the pump head of 20-25 m. The most stable characteristic of the pump operation is observed in this range of heads. Tangential, meridional and relative velocities of fluid flow at the impeller blades are calculated.