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RESEARCH PAPERS

Experimental Investigation of a Variable Geometry, Radial Ejector

[+] Author and Article Information
T. T. Ng

University of California-Berkeley, Berkeley, Calif.

D. R. Otis

Mechanical Engineering Department, University of Wisconsin-Madison, Madison, Wisc.

J. Fluids Eng 101(4), 491-494 (Dec 01, 1979) (4 pages) doi:10.1115/1.3449016 History: Received October 25, 1978; Online October 12, 2010

Abstract

A radial ejector with two degrees of geometric control is constructed and tested at pressures ranging from 0.7 to 1.5 atmospheres and entrainment ratios ranging from 0 to 2. Maximum efficiencies of 16 percent were obtained, and performance could be maintained over a range of pressures by changing the position of the “spool,” an element defining the nozzle contours and flow areas. This design offers potential for applications with varying pressure and flow conditions where feedback control systems can continuously adjust the ejector geometry for maximum performance.

Copyright © 1979 by ASME
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