Cone Clogging of Submerged Entry Nozzle in Rare Earth Treated Ultra-Low Carbon Al-Killed Steel and Its Effect on the Flow Field and Vortex in the Mold
Cone Clogging of Submerged Entry Nozzle in Rare Earth Treated Ultra-Low Carbon Al-Killed Steel and Its Effect on the Flow Field and Vortex in the Mold
复制标题
稀土处理超低碳铝镇静钢浸入式水口锥体堵塞及其对结晶器内流场和涡流的影响
DOI：
10.3390/met11040662
复制
发表时间：
2021-04-01
期刊：
影响因子：
2.9
通讯作者：
Bao, Yanping
中科院分区：
文献类型：
--
作者：
Hua, Chengjian;Wang, Min;Bao, Yanping
分析了用于铸造1300吨和260吨铝死钢的两个浸入式入口喷嘴。在分析的基础上，引入堵塞率、喷嘴堵塞角、喷嘴宽度和喷嘴高度等参数来描述SENs中堵塞的几何形状；在此基础上，建立了传感器喷嘴堵塞特性的几何模型，采用大涡模拟（LES）和分数体积法（VOF）模拟了钢渣界面的相互作用行为。利用Liutex方法对涡流的可视化和旋转幅度进行了表征。定量地分析了喷嘴堵塞对结晶器内流动和涡流分布的影响，结果表明堵塞率为0% ~ 45.9%，钢渣界面波动特性在工业实验中得到了很好的验证。
Two submerged entry nozzles (SENs) used for casting 1300 tons and 260 tons of Al-killed steel were dissected. Several parameters including block rate, nozzle clog angle, port width, and port height of the clogged nozzle were introduced to describe the geometry of clogs in the SENs based on the dissection; furthermore, a geometry model was established to describe the characteristics of the nozzle clogging of the SENs. A large-eddy simulation (LES) coupled with the volume of fraction (VOF) method was adopted to simulate the steel–slag interface’s interaction behavior. The vortex visualization and rotation magnitude were characterized by the Liutex method. Quantitatively, the influence of nozzle clogging resulted in block rates of 0% to 45.9% on the flow and vortex distribution in the mold, and the characteristics of the steel–slag interface fluctuation were well verified in the industrial experiment.