Effects of Thermal Boundary Conditions on Numerical Simulation of Molten Steel in Tundish

Based on the structure and operation parameters of a T-type tundish,a 3-D mathematical model has been developed to study the flow field and heat transfer of molten steel in the T-type tundish by the software FLUENT.Aiming at the problems existing in the thermal boundary condition for the numerical simulation of molten steel in the tundish,a mathematic model of tundish liner to study the heat transfer in the T-type tundish liner was introduced.The relationship between the heat flux and the temperature of inside-wall in the liner is used as the thermal boundary condition to simulate the flow field and heat transfer of molten steel in the T-type tundish by the software FLUENT.Simulation results show that the thermal boundary condition according to the mathematic model of tundish liner can obtain a result of flow field and heat transfer of the molten steel in the T-type tundish more conform to the reality than using the commonly thermal boundary conditions.