ISSN Online: 2377-424X
ISBN Print: 978-1-56700-421-2
International Heat Transfer Conference 15
Influence of Form and Thermal Properties of Granular Layer to Subcooled Liquid Boiling Dynamics in Impulse Heat Generation in the Wall
Résumé
Based on the developed and implemented optical polarization method of temperature fields and a study of the
development of convective flows during unsteady conductive heating of the cell's wall, consisting of a layer of
objects with different geometric shapes, placed in liquid. In terms of variation of thermophysical properties of
liquid, granular layer (spheres or cylinders) and the magnitude of the heat flux, the mechanism of influence on
the time and the nature of the formation of free convection near the heated bottom wall was studied. In the work
holographic interferometry method was used to fix the temperature fields, based on the dependence of the
refractive index of continuum media from temperature. Results of the visualization of temperature fields and the
development of convective flows during unsteady warm wall of the cell were obtained. The conditions of
microconvection depending on the thermophysical properties of the liquid and the supplied quantity of heat flow
based on the mathematical model were defined. The results of numerical modeling are presented.