Physical and numerical simulation of phase interface shape variation at vertical unidirectional crystallization in a rotating magnetic field

M. Z. Sorkin - M. P. Zabelina - Yu. M. Gel'fgat - I. V. Fryazinov

Institute of Physics, Latvian University, Salaspils-1, LV-2169, Latvia

Abstract
A numerical model of heat transfer at vertical unidirectional crystallization (Bridgman technique) in a rotating magnetic field affecting the conducting liquid phase has been proposed. A possibility to control the phase interface shape as well as to maintain a flat or convex (toward the melt) interface shape during the process of crystallization has been demonstrated by applying a properly chosen set of the parameters of the process and of the intensity of the MHD influence. Tab. I, figs 15, refs 7.