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RESEARCH PAPERS

Whirl Dynamics of a Rotor Partially Filled With Liquid

[+] Author and Article Information
J. A. Wolf

University of California, Los Angeles, Calif.

J. Appl. Mech 35(4), 676-682 (Dec 01, 1968) (7 pages) doi:10.1115/1.3601291 History: Received May 31, 1968; Online September 14, 2011

Abstract

A spinning rotor, mounted on an elastic shaft and containing a symmetrically located cylindrical chamber partially filled with liquid, is assumed to undergo a small whirling motion. In the analysis, rotor unbalance, gravity, and gyroscopic terms are considered negligible, and the liquid motion is taken as being axially uniform. The added liquid produces a lowering of the usual synchronous critical speed. In addition, waves in the liquid layer couple with rotor whirl motion to produce a range of self-excited asynchronous whirl speeds above the critical, similar to those observed for nonsymmetrical solid rotors. Experiments completely corroborate the analytical results.

Copyright © 1968 by ASME
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