Void Fractions in Subcooled Flow Boiling

[+] Author and Article Information
P. S. Larsen

Department of Mechanical Engineering, The University of Michigan, Ann Arbor, Mich.

L. S. Tong

Atomic Power Division, Westinghouse Electric Corporation, Pittsburgh, Pa.

J. Heat Transfer 91(4), 471-476 (Nov 01, 1969) (6 pages) doi:10.1115/1.3580229 History: Received July 12, 1968; Revised February 03, 1969; Online August 25, 2011


A semianalytic model is presented for the prediction of void fractions in subcooled flow boiling at elevated pressures. The model is based on the formation and growth of a bubble boundary layer adjacent to the heated surface at a rate determined by the difference between the imposed surface heat transfer and the heat removal capability of the subcooled liquid core of the flow. The latter heat transfer rate is determined by the analogy between heat and momentum transfer in the liquid employing empirical friction-factor data for low-quality two-phase flow. The analysis is compared to experimental results.

Copyright © 1969 by ASME
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