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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.v32.i1-3.220
7 pages

The Propagation Velocity of the Front of Film Boiling Center in Critical Regimes

M. O. Lutset
S. S. Kutateladze Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia

ABSTRAKT

Based on a nonlinear heat conduction equation with the temperature-dependent coefficients, a one-dimensional process of the propagation of the boundary of the center of a new boiling regime is considered in two limiting cases: for a maximum and for a minimum critical heat fluxes. The form of the heat transfer curve was assumed to be arbitrary in a reasonable degree. An accurate solution is obtained for the velocity of the propagation of the boundary. It turned out that there is a rigid coupling between the velocity of the motion of the boundary and intensity of heat transfer in a transient region. This means that the form of the heat transfer curve of transient boiling near critical heat fluxes determined the velocity for the motion of the boundary where the change of the regimes occurs. This is an interesting object for experimental investigation.


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