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Heat Transfer Research
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ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v32.i1-3.230
8 pages

Regular Structures and Critical Heat Flux in Freely Falling Liquid Films

Aleksandr N. Pavlenko
Kutateladze Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
Viatcheslav Vladimirovich Lel'
Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, Russia

RÉSUMÉ

Experimental investigation is made of the conditions of the appearance and development of "dry" spots, critical heat fluxes and of heat transfer in film boiling of liquid nitrogen on a vertical heated surface of a plate. Experimental data are obtained for a variable Reynolds number in the incident liquid film at saturation within the range of from 10 to 2000. The limits of regime parameters are determined that separate the zones of liquid flow with different mechanisms of the occurrence of "dry" spots and of burnout heat transfer.


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