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Heat Transfer Research
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ISSN Druckformat: 1064-2285
ISSN Online: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v38.i7.60
pages 635-646

Modeling of Near-Wall Explosive Boiling-up

S. M. Mitrofanov
Institute of Thermophysics, Ural Branch of the Russian Academy of Sciences, Ekaterinburg, Russia
Pavel A. Pavlov
Institute of Thermophysics, Ural Branch of the Russian Academy of Sciences, Amundsen Street 107a, Ekaterinburg, 620016, Russia

ABSTRAKT

A computer model of the process of near-wall explosive boiling-up has been developed. The model is used to find geometric characteristics of explosive boiling-up (the length of the wetting line and the dry area), needed for calculation of heat transfer and construction of the general picture of vaporization. Numerical results have been compared with an approximate analytical theory, built without taking into account correlations in the nucleation process. Discrepancies between the results of modeling and the values obtained by theoretical formulas can be explained by correlation in the location of sequentially generated centers. The dynamics of propagation of the front of explosive boiling-up over the heater has been calculated at a predetermined temperature gradient.


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