摘要
应用商业软件CFX及水力学模型,对三流连铸中间包钢水流场进行了模拟研究,分析比较了原型中间包和改造后中间包内钢水的流动状态。结果表明:数值模拟与水力学模型结果相符;原型中间包内存在明显的短路流,死区比例大,均超过了50%;通过改造中间包控流装置后,中间包内钢水流动状态得到了明显改善,死区体积比例大大降低,死区比例均控制在20%以内,最低的仅为9.41%。通过现场试验发现:中部水口出口与边部水口出口的钢水温差最大值由改造前的5℃减小到2℃;事故率明显降低,达到了预期的冶金效果。
The flow field of molten steel in the three-strand tundish was studied by the commercial software CFX and the water simulation.After analyzing and comparing the flow state of the original and improved tundish,the results are obtained as follows：The results of numerical simulation are the same as that of hydraulic model.The apparent short road flow is found in the original tundish and the proportion of dead zone is large,which is more than 50%.After transforming the tundish,the flow performance of the molten steel in the tundish has been improved significantly and the dead volume fraction is reduced sharply to less than 20%,the minimum value is only 9.41%.The field experiment shows that the maximum temperature differences of molten steel between middle and side nozzle outlet has been reduced from 5℃ to 2℃.The accident rate has been decreased obviously so as to reach the expected metallurgical results.
出处
《连铸》
2010年第5期1-6,共6页
Continuous Casting
关键词
中间包
流场
数学物理模拟
tundish
flow field
mathematical-physical simulation
