An approximate solution of the generalized Stefan problem in a porous medium with variable thermal properties
Abstract
An approximate solution of the generalized Stefan problem is found for a porous material with variable thermophysical properties. The coefficient of heat diffusion is taken into account, and the mechanism for deepening of the vaporization front is described in terms of the Stefan problem. The solution of the generalized Stefan problem for material with constant thermophysical properties is regarded as a special case. It is shown that the rate of surface evaporation and the dimensionless mass transfer potential decrease with increasing Posnov number.
 Publication:

Teplomassoobmen  V; Vsesoiuznaia Konferentsiia po Teplomassoobmenu
 Pub Date:
 1977
 Bibcode:
 1977TVKTM...5..187K
 Keywords:

 Heat Transfer;
 Mass Transfer;
 Porous Materials;
 Thermal Diffusion;
 Thermophysical Properties;
 Diffusion Coefficient;
 Evaporation;
 Temperature Distribution;
 Fluid Mechanics and Heat Transfer