Publisher : The Korean Society of Mechanical Engineers
DOI : 10.22634/KSME-B.19184.108.40.20662
Title & Authors
Experimental Study on Flows within a Shrouded Centrifugal Impeller Passage -at the Shockless Condition- Kim, Seong-Won; Jo, Gang-Rae;
Flow patterns were measured in a shrouded centrifugal impeller. The flow rate in measurements was fixed at the value corresponding to a nearly zero incidence at the blade inlet. By using a single slanted hot-wire probe and a Kiel probe mounted on the impeller hub disk, the 3-D relative velocities and the rotary stagnation pressures were measured in seven circumferential planes from the inlet to the outlet of impeller rotating at 700 rpm, and the static pressure distribution along flow passage and the slip factor at impeller outlet were calculated from the measured values. From these measured data, the primary and secondary flows, the wake production and the static pressure rise in the impeller passage were investigated. Furthermore, the secondary flow patterns and the wake's location in this impeller passage were compared with those of the unshrouded impeller.