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RESEARCH PAPERS: Boiling and Condensation

Forced Convection Condensation on a Horizontal Tube: Influence of Turbulence in the Vapor and Liquid Phases

[+] Author and Article Information
D. Homescu, P. K. Panday

Universite de Franche Comté, Institut de Génie Energetique, 2, avenue Jean Moulin, 90000 Belfort, France

J. Heat Transfer 121(4), 874-885 (Nov 01, 1999) (12 pages) doi:10.1115/1.2826078 History: Received August 07, 1997; Revised June 25, 1999; Online December 05, 2007

Abstract

An implicit finite difference scheme is used to solve the problem of condensation of pure vapors flowing vertically downwards around a horizontal tube. The incompressible flow equations coupled at the interface for the liquid and vapor phases are solved. The pressure gradient, inertia, and enthalpy convection terms are retained in this analysis, and the influence of turbulence in the two phases is considered. The calculated results for laminar flow and those from different mixing length turbulence models are compared with experimental results for condensation of steam and R113. The results presented show that the average condensation heat transfer coefficients obtained using Kato’s turbulence model in the condensate film and Pletcher’s model in the vapor phase, are in good agreement with the experimental data.

Copyright © 1999 by The American Society of Mechanical Engineers
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