【作者】 朱苗勇；

【Author】 Zhu Miaoyong;Northeastern University;

【机构】 东北大学；

【摘要】 该报告介绍了对此复杂过程数值模拟的研究进展,连铸结晶器内流场与电磁场耦合模拟研究阐明了电磁搅拌和电磁制动作用下钢液流动行为、液面波动特征、以及夹杂物在连铸坯内分布特征,坯壳—结晶器铜板热流模型与坯壳热/力模型的耦合成功预测了结晶器周向和高度方向的保护渣和气隙分布特征,定量预测了不同工艺参数下连铸坯中心偏析指数。此外,连铸坯凝固组织演变的模拟正向枝晶的扩展方向发展。更多还原

【Abstract】 In this presentation,the research progress of numerical simulation for continuous casting process was introduced.In the slab continuous casting mold,the coupled simulation between flow and electromagnetic fields revealed the flow behavior of molten steel with electromagnetic stirring or braking,the fluctuation characteristic of the slag-steel interface and the distribution characteristic of inclusions in the strand,and the heat flow model from the solidified shell to the copper plate of mold was coupled with the thermo/mechanical model of the solidified shell,thus the distributions of mold flux and air gap both along circumference and height directions of the mold were successfully predicted,while founded theoretical backgrounds for designing new mold with inner convex surface and controlling the surface corner crack of micro-alloyed steel.In addition,the numerical simulation of the evolution of solidification structure of the continuously cast strand mainly focused on the as-cast grain,and its extension to the dendrite structure needed further more endeavors.更多还原