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RESEARCH PAPERS

Asynchronous Instability of a Rotating Centrifuge Partially Filled With Fluid

[+] Author and Article Information
C. A. Cheng, A. S. Berman, T. S. Lundgren

Department of Aerospace Engineering and Mechanics, University of Minnesota, Minneapolis, Minn. 55455

J. Appl. Mech 52(4), 777-782 (Dec 01, 1985) (6 pages) doi:10.1115/1.3169145 History: Received June 01, 1984; Revised November 01, 1984; Online July 21, 2009

Abstract

An experimental investigation of the asynchronous whirl motion of a partially filled rotating centrifuge on an elastic support system has been performed. Whirl runout amplitudes are measured and the data are used to deduce the stability boundaries of the asynchronous whirl. The effects of various parameters on the stability boundaries are studied systematically. These parameters are the fill ratio, mass ratio, Reynolds number, and the damping of the elastic support system. The experimental results are compared with theoretical predictions based on a linear analysis. Free surface shapes are compared with results of nonlinear analysis.

Copyright © 1985 by ASME
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