基于数值模拟的五流感应加热中间包流场优化

中间包配置感应加热器后的结构与原型中间包结构差异较大,不宜使用常规添加挡墙、挡坝或稳流器的方式优化流场.针对国内典型5流通道式感应加热中间包分流过热度高及边部流和中间流的温差大等问题,设计了改进方案,并通过数值模拟方法研究了不同结构的流钢通道对中间包流场和温度场的影响.结果表明,带有变径的分口式流钢通道的结构最佳,依此...

Flow field optimization of five-stream induction heating tundish based on numerical simulation

Structure of tundish equipped with induction heater is quite different from that of prototype tundish, so the flow field can not be optimized simply by adding retaining walls, dams or current stabilizers. Aiming at the problems of large temperature difference between side strand and middle strand and high superheat degree of casting in domestic 5-channel induction heating tundish, several schemes were designed, and their flow field and temperature field were compared by numerical simulation. The flow field of induction heating tundish needs to be re-optimized. In this paper, the effect of different channel structures on tundish flow field is studied. The results show that the structure of the split channel structures with variable diameter is the best. After optimization of tundish structure, the temperature difference between each strand is only 1~2 ℃, the standard deviation of tracer concentration is only 0.03, and the volume fraction of dead zone is only 16.6%. It not only ensures the uniformity of molten steel among flows, but also helps to remove inclusions and improve the metallurgical effect of tundish.