Numerical prediction of turbulent flow, heat and solute transport with phase change for Fe-C binary alloy in crystallizor of inverse casting

摘要

A two-dimensional numerical model has been undertaken to describe coupled liquid steel's turbulent flow, heat transfer and solute transport with solidification for Fe-C binary alloy in the crystallizor. The solid-liquid phase change phenomena have been modeled by using the continuum formulations and considering the mush zone as porous media. The turbulence flow in the crystallizor has been accounted for, using a modified version of the low-Reynolds-number k - epsilon turbulence model of Launder and Sharma. A well-known numerical procedure, SIMPLE, has solved the control equations in conjunction with a phase iteration procedure. The flow pattern, solidification profiles and carbon segregation of inverse casting have been studied.