Experimental Determinations of the Flow Characteristics in the Volutes of Centrifugal Pumps

Abstract

This paper is a discussion of an exhaustive study which was made to determine internal-flow characteristics of two high-efficiency, high-head centrifugal pumps of commercial design. Special equipment was constructed to measure instantaneous values of pressures and velocities at various stations in the volutes. The authors discuss previous work of a nature similar to their study. They describe briefly the apparatus used in their tests, the arrangement of the test equipment, and the accuracy of the equipment used to measure the instantaneous values of pressures and velocities in the volutes. The results of the tests are presented in graphical form.