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RESEARCH PAPERS

Flow in a Centrifugal Fan of the Squirrel-Cage Type

[+] Author and Article Information
R. J. Kind, M. G. Tobin

Department of Mechanical and Aeronautical Engineering, Carleton University, Ottawa, Ontario, Canada K1S 5B6

J. Turbomach 112(1), 84-90 (Jan 01, 1990) (7 pages) doi:10.1115/1.2927426 History: Received January 13, 1989; Online June 09, 2008

Abstract

This paper presents the results of performance measurements and detailed measurements of the mean flow field at rotor inlet and rotor exit in three squirrel-cage fan configurations. The flow-field measurements were taken with a five-hole probe and yield total pressure, static pressure, and the three components of velocity. Measurements were taken for two casing throat areas and for two different rotors. For each configuration the flow field was measured for flow rates below, near, and above the best-efficiency point. Flow patterns are complex and there is reverse flow through the rotor blading even at the best-efficiency operating condition. Although complex, the main features of flow behavior can be understood. They were common to all three fan configurations.

Copyright © 1990 by The American Society of Mechanical Engineers
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