Condensation on Coherent Turbulent Liquid Jets: Part I—Experimental 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), 1068-1074 (Nov 01, 1989) (7 pages) doi:10.1115/1.3250769 History: Received January 26, 1987; Online October 20, 2009


Condensation on coherent turbulent liquid jets was investigated experimentally in order to obtain a data base for the liquid side heat transfer coefficient. Jet breakup was identified by means of high-speed photography. Nozzles were formed from smooth and roughened glass tubes to define the initial turbulence level in the jets. Jet diameters of 3–7 mm and lengths of 2–12 cm were tested at jet velocities of 1.4–12 m/s giving Reynolds numbers of 6000–40,000. Viscosity and surface tension were varied by using ethanol, and water from 277–300 K, as test liquids. The Stanton number was found to be essentially independent of jet diameter, but to decrease with length to the power of −0.57, velocity to the power of −0.20, surface tension to the power of −0.30, and viscosity to the power of −0.1.

Copyright © 1989 by ASME
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