The behavior of a vapor film on a highly superheated surface immersed in subcooled water

Abstract

Results are given of an experimental investigation of the behavior of a vapor film on a highly superheated hemispherical surface immersed in water subcooled to the saturation temperature. The conditions of existence of vapor films on a hot surface and the characteristics of their collapse from the heating surface and transition to nucleate boiling are revealed, as well as the effects which accompany the vanishing of vapor film. The possibilities of internal triggering of fine fragmentation of hot melt and vapor explosion are discussed.

The dynamics of a vapour bubble growth under the boiling of a subcooled liquid in low volumes

“…Modeling representations of the boiling of the subcooled water under forced flow have been studied and also a comprehensive analysis has been conducted [18][19][20][21][22][23][24]. It is found that at subcooling temperatures over 50 • the hydraulic resistance coefficients equal under the boiling and forced convection of a single-phase liquid at non-isothermal flow.…”