小方坯连铸过程温度场和流场的实时模拟

为了寻求在瞬态下仍然有效的实时模拟模型，以便模拟连铸的全过程，基于任意拉格朗日-欧拉（ALE）方法和Lam-Bremhorst低雷诺数k-ε方程，建立了考虑湍流的传热和流体流动的实时模拟模型.该模型有效地实现了移动计算域下的动态网格扩展，可以模拟从拉坯到切割坯连铸全过程的温度场与流场的变化.作为实例，X70钢小方坯的模拟效果与实验验证吻合很好.

Real-time simulation of temperature field and flow field for a billet in continuous casting

To develop a real-time mathematical model which can be valid ever at a transient state for simulating full continuous casting processes,a real-time simulation mathematical model of heat transfer and fluid flow was constructed considering turbulent flow on the basis of the arbitrary Lagrangian-Eulerian(ALE) algorithm and the Lam-Bremhorst low-Reynolds number k-ε formulation. By using this model,dynamic grids expansion under moving computational domains could be realized and the temperature field and fluid flow field could be simulated for the full process of steel continuous casting. As an example,the simulation results of X70 steel are in accordance with experimental measurements.