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Research Papers

Prediction of Choking Flow in Centrifugal Impellers

[+] Author and Article Information
Harold Lown, Frank J. Wiesner, Jr.

Carrier Corporation, Syracuse, N. Y.

J. Basic Eng 81(1), 29-35 (Mar 01, 1959) (7 pages) doi:10.1115/1.4008351 History: Received March 05, 1958; Published March 01, 1959; Online February 20, 2019

Abstract

A method for predicting choking flow in centrifugal impellers is outlined in this paper. The theoretical development of the sonic flow equations for an ideal gas in an impeller passage is combined with empirical data through the derivation of a passage contraction ratio based upon test data. Construction of the three-dimensional passage throat area for two basic types of impellers is also outlined. Good correlation between experimental data and calculated choking flows for other centrifugal impellers is shown by the use of this method. Further utilization of this method for nonideal gases ranging in compressibility from 0.85 to 0.98 seems feasible if small errors can be tolerated.

Copyright © 1959 by ASME
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