Numerical Simulation of the Coupled Moloeten Steel Flow and Heat Transfer, Solidification in Slab Continuous Casting Mold

摘要

A three-dimension coupled mathematical model was developed on the base of the N-S equations, low-Reynolds number turbulence kappa-epsilon. model and energy conservation equation. The molten steel flow was modified by Darcy law because of the effect of slolid shell and mushy region in the mold. The temperature distribution and solidification were calculated by energy conservation equation. The results showed that the molten steel flow was effected by the sloid shell and mushy region greatly, especially in the lower part of the mold. Under the constant casting speed, the variety of casting temperature played liile effect on the thickness of solid shell, but effected the mushy region and temperature distribution remarkably at the outlet of the mold. At the constant casting temperature, with the increase of casting speed, the shell thickness decreased sharply, especially at the corner and rrow side.