Thermo-solutal growth of an anisotropic dendrite with six-fold symmetry.

摘要: A stable growth of dendritic crystal with the six-fold crystalline anisotropy is analyzed in a binary nonisothermal mixture. selection criterion representing relationship between dendrite tip velocity and its diameter derived on basis morphological stability analysis solvability theory. complete set nonlinear equations, consisting undercooling balance condition, which determines implicit dependencies as functions total undercooling, formulated. Exact analytical solutions these equations are found parametric form. Asymptotic describing at small Peclet numbers determined. Theoretical predictions compared experimental data obtained for ice dendrites growing water-ethylenglycol well pure water.