INVESTIGATION OF FLOW FLUCTUATIONS AT THE EXIT OF A RADIAL-FLOW CENTRIFUGAL IMPELLER

摘要

Surveys were made at. the exit of a radial-flow centrifugal impeller to obtain instantaneous values of velocity from blade to blade and at various positions between the front and the rear diffuser walls. Surveys were also made at several radial stations midway between the walls of the diffuser to observe the radial change in the flow pattern through the vaneless diffuser. All surveys were made with a constant-temperature hot-wire anemometer.