Open AccessDetermination of the vapor film thickness at steady superfluid helium film boiling
Author(s) -
Yu Yu Puzina,
A. P. Kryukov,
I A Yachevsky
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1359/1/012050
Subject(s) - superfluid helium 4 , leidenfrost effect , thermodynamics , boiling point , helium , laplace transform , boiling , hydrostatic pressure , superfluidity , vapor pressure , heat transfer , liquid helium , mass transfer , materials science , mechanics , nucleate boiling , chemistry , condensed matter physics , heat transfer coefficient , physics , atomic physics , mathematical analysis , mathematics
Heat mass transfer processes at superfluid helium boiling is considered for different conditions. Mathematical description is formulated with taking into account the peculiarities of superfluid helium. System of equations is based on the methods of continuum mechanics and molecular kinetic theory. Pressure distribution in the liquid is determined by the hydrostatic difference. At the vapor-liquid interface the Laplace formula is used. The vapor pressure in the film is determined by the non-equilibrium effects in the vapor near the interface. Heat transfer in a liquid is described by the Gorter-Mellink semi-empirical theory. Experimental data on the stationary boiling of superfluid helium under various conditions are interpreted based on the formulated mathematical model. For all cases in the considered range of parameters, the qualitative and in some cases quantitative agreement between the calculated and experimental values of the vapor film thickness were obtained.