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Thermophysics and Aeromechanics

2011 year, number 4

The boiling up model for highly superheated liquid with formation of evaporation front

S.P. Aktershev, V.V. Ovchinnikov
Kutateladze Institute of Thermophysics SB RAS
sergey-aktershev@mail.ru
Keywords: boiling up, superheated liquid, vapor cavity, propagation of evaporation front, numerical simulation
Pages: 591-602

Abstract

Boiling up of metastable liquid on the surface of a cylindrical heater is studied at high superheating, when the evaporation front is formed. Boiling up begins with formation of a spherical bubble on the heater wall. Evaporation fronts propagating along the heater with the constant velocity are formed due to development of interfacial instability.  The mathematical model describing the growth of a spherical bubble and vapor cavity behind the evaporation front is developed. Results of numerical simulation agree with available experimental data.