Nucleate Boiling in Thermally Developing and Fully Developed Laminar Falling Water Films

[+] Author and Article Information
M. Cerza

National Research Council/Naval Research Laboratory, Laboratory for Computational Physics and Fluid Dynamics, Washington, DC 20375-5000

V. Sernas

Department of Mechanical and Aerospace Engineering, Rutgers University, Piscataway, NJ 08854

J. Heat Transfer 110(1), 221-228 (Feb 01, 1988) (8 pages) doi:10.1115/1.3250455 History: Received July 10, 1984; Online October 20, 2009


This paper reports an experimental investigation of nucleate boiling in thin water films falling down the outside of a cylindrical heated tube. A mathematical model for the convective (nonboiling) heat transfer coefficient in the laminar thermal entry length was developed and used as a comparison to the experimental boiling heat transfer coefficients. A heat transfer correlation based on mechanistic arguments is presented and is shown to represent the experimental data fairly well. The experimental data were also compared with existing heat transfer data in the literature. The flow rates utilized in this study corresponded to a Reynolds number range from 670 and 4300 and the heat flux range was 6 to 70 kW/m2 .

Copyright © 1988 by ASME
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