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第13届国际传热学会年报
Graham de Vahl Davis (open in a new tab) School of Mechanical and Manufacturing Engineering, University of New South Wales, Kensington, NSW, Australia
Eddie Leonardi (open in a new tab) Computational Fluid Dynamics Research Laboratory, School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney, Australia 2052

ISSN Online: 2377-424X

ISBN CD: 1-56700-226-9

ISBN Online: 1-56700-225-0

DIRECT CONTACT EVAPORATION OF A WATER DROPLET IN A MOLTEN-METAL POOL

page 11
DOI: 10.1615/IHTC13.p12.580
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摘要

Experiments have been performed with Newton's alloy and water droplet in a stable thermally stratification to avoid premature boiling in the injection nozzle. Dynamic behaviour of two-phase bubble evaporating in a molten alloy was clearly observed by using high-frame rate neutron radiography. Measurements of drag coefficient of a single two-phase bubble showed that the relationship between the rising velocity of a single two-phase bubble in the molten Newton's alloy was not much different from that for an ordinary one. The rate of growth of a two-phase bubble was measured to determine the interfacial heat transfer coefficient in a molten alloy-water system. An empirical equation of overall heat transfer coefficient was presented for practical application.

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