Peak Pool Boiling Heat Flux in Viscous Liquids

[+] Author and Article Information
V. K. Dhir, J. H. Lienhard

Boiling and Phase-Change Laboratory, Mechanical Engineering Department, University of Kentucky, Lexington, Ky.

J. Heat Transfer 96(1), 71-78 (Feb 01, 1974) (8 pages) doi:10.1115/1.3450143 History: Received April 24, 1973; Online August 11, 2010


The stability of a gas jet in a surrounding viscous liquid is studied. An expression is developed for the critical velocity at which the jet becomes unstable in a returning viscous liquid. The stability analysis is made to correspond with the geometrical configuration of gas jets and liquid columns similar to those observed near the peak pool boiling heat flux. The critical velocity of the gas jet is then used to obtain the functional form of the peak heat flux on flat plates and cylindrical heaters. The expressions are compared with original observations of the peak heat flux in very viscous liquids on flat plate, and cylindrical, heaters at both earth-normal, and elevated, gravities.

Copyright © 1974 by ASME
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