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ACRC Technical Report 111PDF


Title:Prediction of the Circumferential Film Thickness Distribution in Horizontal Annular Gas-Liquid Flow
Author(s):Hurlburt, E.T.; Newell, T.A.
Subject(s):two-phase modeling
refrigerant-oil mixtures
Abstract:This paper develops a liquid film symmetry correlation and a liquid [11m thickness distribution model for horizontal annular gas-liquid pipe flows. The symmetry correlation builds on the work of Williams et al. (1996). A new correlating parameter is presented. The experimental data used in the correlation is from all three of the horizontal annular flow regions: stratified-annular, asymmetric annular, and symmetric annular. The liquid film thickness model is based on work done by Laurinat et al. (1985). The circumferential momentum equation is simplified to a balance between the normal Reynolds stress in the circumferential direction and the circumferential component of the weight of the film. A model for the normal Reynolds stress in the circumferential direction is proposed. The symmetry correlation is used to close the model equations. Circumferential film thickness distribution predictions are made in the three horizontal annular flow regions and compared to experimental data.
Issue Date:1997-02
Publisher:Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign.
Series/Report:Air Conditioning and Refrigeration Center TR-111
Genre:Technical Report
Sponsor:Air Conditioning and Refrigeration Project 71
Date Available in IDEALS:2009-04-24

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