Effects of Two-Phase Pressure Drop on the Self-Sustained Oscillatory Instability in Condensing Flows

[+] Author and Article Information
B. L. Bhatt, G. L. Wedekind

Oakland University, Rochester, MI 48063

K. Jung

Software Support Corporation, Birmingham, MI

J. Heat Transfer 111(2), 538-545 (May 01, 1989) (8 pages) doi:10.1115/1.3250711 History: Received March 09, 1987; Online October 20, 2009


This paper presents the results of an extension of an experimental and theoretical investigation of an unstable flow phenomenon that leads to self-sustained limit-cycle-type oscillations of large amplitude, and which, under certain conditions, can involve flow reversals. The influence of two-phase pressure drop is examined and shown to have a stabilizing effect on the instability. Inclusion of the two-phase pressure drop as part of the downstream throttling allows the utilization of a previously developed linearized analysis, based on the system mean void fraction model, to predict successfully the experimentally observed stability boundary.

Copyright © 1989 by ASME
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