三流非对称中间包流场水模拟研究

Simulation Optimization Research of Tundish under Different Pull Speeds

在保证产量的情况下,为使夹杂物充分上浮去除,钢水温度均匀,进一步提高某钢厂320 mm×480 mm连铸方坯的生产质量,针对三流非对称中间包,设计1∶3水模拟试验和数值模拟,进行不同拉速和有无挡坝的研究。通过速度场和温度场的数值模拟以及不同拉速下的水模拟,可以发现,随着拉速的增加,三个水口的停留时间减小,并且三个水口的停留时间有一定差距。添加挡坝后随着拉速的增加,平均停留时间减小得更为缓慢。速度场和温度场的分布规律并不随拉速的变化而变化,但拉速的增加会使中间包内的速度和温度上升。

In this paper,asymmetric tundish of three-strand casting construction model for different speeds and the existence of dam had been investigated. In order to further improve the production capacity of the tundish of electric furnace factory,a water simulation and numerical simulation scheme was designed for three-flow asymmetric tundish. Through numerical simulation on velocity field and temperature field and water model at different casting speeds,it can be found that increase casting speed,will lead to decrease the dwell time of the three nozzles,and the time for three nozzles is different After dam installation,the decrease of dwell time with casting speed becomes small. The distribution of flow field and temperature filed do not vary with casting speed,however,increasing casting speed will increase the flow and temperature of liquid steel in tundish.