Abo Bibliothek: Guest

ISSN Online: 2377-424X

ISBN Print: 978-1-56700-421-2

International Heat Transfer Conference 15
August, 10-15, 2014, Kyoto, Japan

Influence of Form and Thermal Properties of Granular Layer to Subcooled Liquid Boiling Dynamics in Impulse Heat Generation in the Wall

Get access (open in a dialog) DOI: 10.1615/IHTC15.tdy.008833
pages 7777-7783

Abstrakt

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.