Condensation on Coherent Turbulent Jets: Part II—A Theoretical Study

[+] Author and Article Information
S. Kim

Department of Mechanical Engineering, Kukmin University, Sungbukku, Seoul, Korea 132

A. F. Mills

Department of Mechanical, Aerospace, and Nuclear Engineering, University of California, Los Angeles, CA 90024

J. Heat Transfer 111(4), 1075-1082 (Nov 01, 1989) (8 pages) doi:10.1115/1.3250770 History: Received January 26, 1987; Online October 20, 2009


Condensation on coherent turbulent liquid jets was investigated theoretically. The governing conservation equations were obtained using an order of magnitude analysis, and were solved numerically using a finite difference method. The Boussinesq hypothesis was invoked to model turbulent transport. Various eddy diffusivity models, of varying degrees of complexity, were evaluated through comparison with experimental data, and shortcomings noted. An ad hoc model, which allows for axial decay of turbulence by viscosity, and radial decay by both surface tension and viscosity, is shown to be in reasonable agreement with experiment. Numerical solutions were also obtained for laminar jets, and are essentially exact; these solutions are used to give some insight into the nature of the jet heat transfer problem.

Copyright © 1989 by ASME
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