双辊薄带下不锈钢铸轧过程的耦合数值模拟

采用有限元法模拟了双辊铸轧不锈钢过程的流热耦合问题;分析了铸轧速度对熔池内流场、温度场的影响以及流场与温度场之间的相互影响;给出了凝固过程中熔池与铸轧辊之间的热流密度变化趋势及随铸轧速度的变化规律,并把此模拟的结果与试验的结果相比较,吻合较好;通过熔池内温度场及温度梯度分析了熔池内凝固的发展及其对热流密度变化的影响·此模拟结果可以为控制铸轧过程的稳定提供有效的数据

Coupled Numerical Simulation on Twin-roll Casting Stainless Strip Process

Coupled turbulent flow,temperature fields are simulated using the finite element method. The interaction between casting flow field and the temperature fields is also analyzed. The results not only give the changing tendency of heat flux between roll and molten pool but also give the changing tendency between heat flux and casting velocity. The results are compared with the experiment results and they are in good agreement. The mechanism of the heat flux changing is explained by the temperature fields and the solidification developing of the molten field. All these can be helpful for proper control in the cast rolling process.