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Heat Transfer Research
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ISSN Imprimir: 1064-2285
ISSN En Línea: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v32.i1-3.170
7 pages

Specific Features of Hydrodynamics in Unsteady Boiling of Nitrogen in a Channel

I. L. Yarmak
Institute for High Temperatures of the Russian Academy of Sciences, Moscow

SINOPSIS

We present the results of photographic recording of a stepwise influence of a heat flux on liquid nitrogen in a vertical channel. We show that nonstationary boiling is accompanied by the formation and growth of vapor locks in the channel. The mechanism of the crisis of heat transfer is associated with the evaporation of a microlayer of liquid on the heat transfer surface under a growing vapor slug.


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