Papers by Keyword: Two-Phase Systems

Abstract: In thermodynamics, the heat storage coefficient (HSC) β of a material is defined as the square root of the product of the material's thermal conductivity and its volumetric heat capacity. A material's HSC is a measure of its ability to exchange thermal energy with its surroundings. A resistor model has been proposed by us in the following manner. In the case of soil materials, the solid particles are surrounded by fluid, or in the case of vacuum, by empty space. The HSC of such an unconsolidated system will depend on the conditions of porous media: porosity, temperature, HSC of different phases and the structure of the aggregate. The present model also yields values in good agreement with experimental results of other workers.

Abstract: Growth behavior and kinetics of grains in a liquid matrix has been studied by computer simulation for various physical and processing conditions. The kinetics of growing and dissolving grains is considered to follow that of single crystals in a matrix. Depending on the crystal shape, i.e. rounded or faceted, different kinetic equations were adopted for growing grains and a single equation was assumed for dissolving grains. Effects of critical parameters such as step free energy, temperature, and liquid volume fraction were evaluated.