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RESEARCH PAPERS

Experimental Rayleigh-Taylor Instability in a Circular Tube

[+] Author and Article Information
J. W. Jacobs, A. Bunster, I. Catton, M. S. Plesset

Nuclear Energy Laboratory, School of Engineering and Applied Science, University of California, Los Angeles, Calif. 90024

J. Fluids Eng 107(4), 460-466 (Dec 01, 1985) (7 pages) doi:10.1115/1.3242514 History: Received October 01, 1984; Online October 26, 2009

Abstract

The Rayleigh-Taylor instability of an air-water system has been investigated experimentally. The instability was produced by accelerating a slug of water down a vertical circular tube of 6.25 in. inside diameter employing a pressure differential. Accelerations from 3 to 25 times gravitational acceleration with fluid depths from 5 to 20 centimeters were studied. The disturbances first observed were purely axisymmetric with wave numbers corresponding closely to the fastest growing values given by linear theory. Later stages of planform development were characterized by a series of transitions which cannot be predicted by linear theory. These transitions were correlated with disturbance height.

Copyright © 1985 by ASME
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