Abstract
Methods for calculating the geometric characteristics of the vapor phase in explosive wall boiling-up processes on a metal wall are analyzed. A monotonic growth of superheat in the liquid above the equilibrium evaporation temperature is specified. We show that the choice of the model for bubble interaction has a profound influence on the geometric characteristics which define the value of the heat flux. Computer simulation was employed to obtain the dependence of dry area on time in two interaction models. We have found that, for a model with instantaneous bubble coalescence, the dry area can be evaluated by the Kolmogorov formula using a correction factor for the most probable triple interaction. An approximation of the distribution length of wetting line over the lifetime of wetting-line segments is obtained. The possibility of using the obtained data for calculation of rapid condensation is analyzed.
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V.P. Skripov, E.N. Sinitsyn, P.A. Pavlov, G.V. Ermakov, G.V. Muratov, N.N. Bulanov, and V.G. Baidakov, Thermophysical Properties of Liquids in the Metastable (Superheated) State, Gordon and Breach Sci. Publishers, New York, London, Paris, Montreal, Tokyo, Melbourne, 1988.
P.A. Pavlov, Boiling-up Dynamics of Strongly Superheated Liquids, USSR Acad. Sci., Ural Branch, Sverdlovsk, 1988.
P.A. Pavlov, Thermodynamic crisis of boiling, J. Engng Thermophysics, 2007, Vol. 16, No. 3, P. 145-154.
P.A. Pavlov and V.E. Vinogradov, Fluctuation emergence of bubbles under a rapid drop of pressure in a liquid, Thermophysics and Aeromechanics, 2015, Vol. 22, No. 4, P. 441-452.
P.A. Pavlov and V.P. Skripov, Vapour generation in pulse heating of liquids, J. Eng. Phys., 1967, Vol. 12, No. 4, P. 503-507.
S.M. Mitrofanov and P.A. Pavlov, Geometric characteristics of unsteady boiling crisis, High Temp., 2006, Vol. 44, No. 5, P. 720-728.
A.N. Kolmogorov, On the statistic theory of metal crystallization, Izv. Akad. Nauk SSSR, ser. Matematika, 1937, No. 3, P. 355-359.
S.A. Kukushkin and A.V. Osipov, Thin-film condensation processes, Physics-Uspekhi, 1998, Vol. 41, No. 10, P. 983-1014.
A.D. Polyanin, Handbook on Linear Equations of Mathematical Physics, Moscow, Fizmatlit, 2001.
B.V. Deryagin, N.V. Churaev, and V.M. Muller, Surface Forces, Moscow, Nauka, 1987.
A.I. Rusanov, Phase Equilibria and Surface Phenomena, Khimiya, Leningrad, 1967.
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The study is performed within the basic research program No. 7 of the Ural Branch of the Russian Academy of Sciences (Project 15-7-12-8).
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Pavlov, P.A. Geometry of the vapor phase in explosive near-wall boiling-up. Thermophys. Aeromech. 23, 543–552 (2016). https://doi.org/10.1134/S0869864316040077
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DOI: https://doi.org/10.1134/S0869864316040077