Multiphase Science and Technology A Quarterly

ISSN for PRINT: 0276-1459

For Online Access

Best Paper Award Selection - Editorial Board Site

2001, Volume13

Issue 3&4

194 pages

Issue price - $280.00

Geoffrey F. Hewitt
Department of Chemical Engineering & Chemical Technology, Imperial College of Science, Technology & Medicine, Prince Consort Road, London SW7 2BY UK

Various aspects of forced convective boiling in vertical channels are discussed, with emphasis on deviations from the classical behaviour. These deviations arise from influence of relaminarisation, from instability effects at near-zero quality and from the influence of multi-component mixtures, hi high quality forced convective boiling, me annular flow regime is reached and, here, droplets are entrained from the liquid film and flow with the gas core. Thus, any prediction methodology for this region must, per force, take account of the behaviour of these droplets. Here, two aspects of droplet behaviour are reviewed, namely the magnitude of the fraction of liquid entrained as droplets at the onset annular flow and the influence of heat flux on entrainment and deposition of droplets. In all these areas, there are significant challenges to the present and future research investigator.

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