The Effect of Axial Clearance on the Performance of a Duel Discharge Radial Turbine

Abstract

This study was conducted to establish the performance parameters of a radial in-flow, dual discharge turbine and to determine the effect of axial clearance on these parameters. The results of the tests can be utilized for design improvements and for predicting off-design operating conditions. The air tests of the turbine were made at several total-to-static pressure ratios. The study presents data obtained from measured rotor discharge flow conditions as well as overall turbine conditions. The test turbine is installed at the Propulsion Laboratory of the Naval Postgraduate School, Monterey, California.