Turbulent Co-Current Gas-Liquid Flow in a Tube With and Without Swirl

[+] Author and Article Information
J. M. Tishkoff, A. C. Pinchak, S. Ostrach

Case Western Reserve University, Department of Mechanical and Aerospace Engineering, Cleveland, Ohio

J. Fluids Eng 101(1), 61-68 (Mar 01, 1979) (8 pages) doi:10.1115/1.3448736 History: Received December 20, 1976; Online October 12, 2010


The fluid dynamic effects of swirl generation on boiling flow in a tube were simulated experimentally by the flow of a water film surrounding a core of air down the interior of a vertical tube. Each of the two fluids could be injected with swirl. Water injection with swirl thickened the subregion of the film not contacted by the air-water interface. Air injection with swirl reduced interfacial disturbances. Transitional phenomena were identified. No transition was correlated with the appearance of dry patches on the test section inner wall. Models for estimating mean film thickness and axial pressure gradient were evaluated.

Copyright © 1979 by ASME
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