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International Heat Transfer Conference 7

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

FORCED CONVECTION FILM BOILING ON A SPHERE IMMERSED IN (a) SUB-COOLED OR (b) SUPERHEATED LIQUID

T. R. Fodemski
THE CITY UNIVERSITY, LONDON EC1V OHB, U.K. MECHANICAL ENGINEERING DEPARTMENT THERMO-FLUIDS RESEARCH CENTRE

W. B. Hall
Nuclear Engineering Laboratories, University of Manchester, U.K.

DOI: 10.1615/IHTC7.1240
pages 375-379

要約

Most models of "thermal explosion" between molten metals and water postulate the fragmentation of the metal into fine particles in order that the heat transfer will be sufficiently rapid to sustain the explosion. In some cases (e.g. molten aluminium and water) the initial metal temperature is considerably in excess of the critical temperature of water, and film boiling is therefore likely to persist at any rate in the early stages of the explosion.
In most cases the initial conditions will be such that the liquid is sub-cooled below its saturation temperature, but in the later stages of a thermal explosion when the pressure begins to decay the bulk of the liquid may become super-heated. The paper presents a theoretical analysis of heat transfer covering these two conditions, with emphasis on their application to sodium.

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