八流小方坯连铸中间包的数值模拟  

Numerical Simulation on the Eight-strand Tundish of Billet Continuous Caster

作　　者：陈远清[1,2] 彭家清 郭愚 韩德飞 郭峰 尚正鸿 

机构地区：[1]钢铁研究总院连铸技术国家工程研究中心,北京100081 [2]张家港联峰钢铁研究所有限公司,江苏张家港215628

出　　处：《钢铁钒钛》2014年第4期83-88,共6页Iron Steel Vanadium Titanium

摘　　要：针对八流小方坯连铸T形中间包,利用钢水流动、传热、传质的三维数学模型对其控流方案进行优化设计,对比分析不同控制装置下的钢水流场、温度场和停留时间分布(RTD)特征。研究结果表明:无控流装置时,中间包内存在短路流,死区较大,流动很不均衡,近流与远流的钢水停留时间和温度都相差较大;现用控流方案消除了短路流,减小了死区,但流动均衡性基本没有得到改善;优化方案比现用方案有了进一步的改善,各流停留时间相近,温差大幅减小,流动均衡性大大改善。The 3D mathematical model of fluid flow,heat transfer and species transportation has been used to optimize the flow control device of a T shape eight ‐ strand billet continuous casting tundish. The flow field,temperature filed,residence time distribution of the molten steel have been computed and analyzed for different flow control cases. The results indicate that short-circuit flow and large dead zone exist without use of flow control devices,and both temperature and residence time are much different between closer and farther outlets,which implies unproportional flow field. The existing flow control case eliminates the short ‐ circuit flow and reduces the dead zone,but the flow proportionality shows no observed improvement. Further improvement has been achieved when the optimized case is used. The residence time of different outlets is uniform on the whole and the temperature difference between the outlets is diminished,which shows the flow proportionality is significantly improved.

关 键 词：八流中间包 数学模型 流场 温度场 RTD 流动均衡性 

分 类 号：TF777[冶金工程—钢铁冶金]