双长水口七流中间包结构优化的数值物理模拟  

Numerical and physical simulation research on the optimization of structure in seven-strand tundish with double-shroud nozzles

作　　者：封明阳 尹延斌 张炯明 史超宇 FENG Mingyang;YIN Yanbin;ZHANG Jiongming;SHI Chaoyu(State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]北京科技大学钢铁冶金新技术国家重点实验室,北京100083

出　　处：《江西冶金》2024年第1期34-42,共9页Jiangxi Metallurgy

摘　　要：以某钢厂双长水口七流方坯中间包为研究对象,进行中间包优化研究。建立1∶4水模型并开展水模实验,对水模实验结果进行分析,研究导流孔位置和上仰角度对双长水口中间包流场的影响,选取最优的控流装置。同时,运用商业软件ANSYS Fluent对原型中间包和优化中间包进行流场和温度场耦合计算,并与水模型结果相互验证。结果表明,优化前后停留时间从127 s增至253 s,死区比例从57.13%减至24.10%,停留时间标准差从21.74减至10.87,浇注区纵截面浇注温度最大温差从4.7 K降至1.2 K,各流水口温差明显降低,中间包各水口一致性增加,流动更加均匀。The optimization of the tundish with a seven-strand double-shroud nozzle has been carried out.An experimental model of a watermodel was created using a 1∶4 scale,and the experiment was also carried out.The experiment investigated the effects of deflection position and upward elevation angle on the flow field of the double-shroud nozzle.According to the analysis of the results of the watermodel experiment,the optimal flow control device was selected.Besides,using the commercial software ANSYS Fluent,the temperature field coupling calculation of the middle pack flow field before and after optimization was calculated.The results were verified with the water model.The findings state that the residence time increases from 127 s to 253 s after optimization;the percentage of dead zone decreases from 57.13%to 24.10%,and the standard deviation of residence decreases from 21.74 to 10.87;the maximum temperature difference of pouring temperature in the longitudinal section of pouring area decreases from 4.7 K to 1.2 K;the temperature differences of each nozzle decreases significantly,the consistency of each nozzle is increased,and the fluid flow is more uniform.

关 键 词：双长水口 七流中间包 物理模拟 数值模拟 

分 类 号：TF711[冶金工程—钢铁冶金]