Numerical Simulation of Flow, Heat, Solidification, Solute Transfer and Electromagnetic Field for Vertical Mold and Curved Mold of Billet
Numerical Simulation of Flow, Heat, Solidification, Solute Transfer and Electromagnetic Field for Vertical Mold and Curved Mold of Billet
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钢坯立式结晶器和曲线结晶器流动、热量、凝固、溶质迁移和电磁场的数值模拟
DOI：
10.2355/isijinternational.isijint-2020-019
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发表时间：
--
影响因子：
1.8
通讯作者：
Xuesong Bai
中科院分区：
文献类型：
--
作者：
Yaoguang Li;Yanhui Sun;Xuesong Bai
凝固、溶质运移和电磁场的耦合作用，分别对方坯连铸垂直结晶器和曲面结晶器进行了研究。揭示了不同类型霉菌的宏观输运行为的特点和规律。研究了结晶器电磁搅拌和结晶器曲率对结晶器内流动、传热、凝固和溶质运移的影响。结果表明，电磁搅拌能在结晶器内产生明显的旋转流动，增强钢液的扩散，促进凝固壳的长大。结晶器曲率对结晶器内的流场分布有着深刻的影响，进而影响结晶器内的温度场和溶质分布。因此，在预测结晶器内的宏观透射现象时，需要考虑结晶器曲率。此外，磁感应强度分布和近表面元素C含量的预测结果与实验结果吻合较好，表明耦合模型在当前工作中的有效性。
solidification, solute transport and electromagnetic field, was separately developed for vertical mold and curved mold of billet continuous casting. Therefore, the characteristics and disciplinarians of macroscopic transport behavior for different types of mold were revealed. The influence of mold electromagnetic stirring (M-EMS) and mold curvature on the flow, heat transfer, solidification, solute transport in the mold were investigated in detail. The results indi-cate that the M-EMS can cause obvious rotating flow in the mold and enhance the superheat dissipation of the molten steel to promote the growth of solidification shell. The mold curvature has a profound effect on the flow field distribution of the mold, and further affects the temperature field and solute distribution in the mold. Therefore, the mold curvature is necessary to consider for predicting the macroscopic transmission phenomenon in the mold. Moreover, the predicted and experimental results for distributions of magnetic flux density and near surface element C content compare agreeably, which indicates the validity of the coupled model in current work.