Distribution of Solute at Solid-Liquid Interface during Solidification of Melt
K. Fukui and K. Maeda
J. Chem. Phys., 109, p.7468-7473(1998)
A model for predicting a distribution coefficient of solute at the solid-liquid interface, when the solid layer is growing, is proposed. The interfacial distribution coefficient is expressed as a function of two gradients of the liquid concentration and equilibrium concentration at the solid-liquid interface. The model is applied to the solidification of a simple eutectic binary liquid of lauric acid and myristic acid in an enclosed rectangular box in which a vertical wall is cooled. The impurity-concentration profile in solid is predicted from the direct numerical computations.