Effect Of Natural Convection On Directional Solidification Of Pure Metal

[摘要] The paper is focused on the modeling of the directional solidification process of pure metal. During the process the solidification front is sharp in the shape of the surface separating liquid from solid in three dimensional space or a curve in 2D. The position and shape of the solid-liquid interface change according to time. The local velocity of the interface depends on the values of heat fluxes on the solid and liquid sides. Sharp interface solidification belongs to the phase transition problems which occur due to temperature changes, pressure, etc. Transition from one state to another is discontinuous from the mathematical point of view. Such process can be identified during water freezing, evaporation, melting and solidification of metals and alloys, etc.

[学科分类] 金属与冶金

[关键词] Keywords: Pure Metal;Solidification;Sharp Interface;Natural Convection;Finite Element Method;Level Set Method