Hydrodynamics of Two-Phase Flow Across Horizontal In-line and Staggered Rod Bundles

[+] Author and Article Information
R. Dowlati, M. Kawaji

Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada M5S 1A4

A. M. C. Chan

Mechanical Research Department, Research Division, Ontario Hydro, Toronto, Ontario, Canada M8Z 5S4

J. Fluids Eng 114(3), 450-456 (Sep 01, 1992) (7 pages) doi:10.1115/1.2910052 History: Received April 08, 1991; Online May 23, 2008


The void fraction and friction pressure drop measurements have been made for vertical two-phase flow of air-water across staggered and in-line rod bundles with different pitch-to-diameter ratios. All void fraction data showed a strong mass velocity effect and were significantly less than the values predicted by a homogeneous flow model, but were well correlated using the dimensionless gas velocity, jg * . The two-phase friction multiplier data could be well correlated with the Martinelli parameter for G > 200 kg/m2 s. The correlations developed for void fraction and two-phase friction multiplier were successfully tested in predicting the total pressure drop in boiling R-113 experiments.

Copyright © 1992 by The American Society of Mechanical Engineers
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