摘要
为优化特大圆坯四流中间包冶金效果,首先通过物理模拟试验进行控流装置的探索优化,分析了不同U型挡墙参数、稳流器和挡坝对流场的影响,选择最佳控流装置,再通过CFD/FLUENT软件对优化前后中间包的流场、温度场和浓度场进行模拟验证。通过物理和数值模拟研究发现,优化后的中间包流场和温度场得到了大幅改善,各流实际平均停留时间、滞止时间和峰值时间得到延长,且一致度均提高到80%以上,死区体积比例由空包的32.18%下降至10%以下,活塞流体积比例由空包的9.52%提高到20%以上,中间包最大温差由空包的39.01 K降低至16.22 K,各流出口温差由空包的3.15 K降低至0.31 K。
In order to optimize the metallurgical effect of four-strand tundish for extra-large round billet,the flow control devices were explored and optimized through physical simulation experiments firstly,and the influence of U-shaped baffles with different parameters,turbulence inhibitor and dam on flow field was analyzed.The optimal flow control device was selected.And then the flow field,temperature field and concentration field of tundish before and after optimization were simulated and verified by CFD/FLUENT software.Through the physical and numerical simulation,it is found that the flow field and temperature field of optimized tundish are greatly improved.The actual average residence time,stagnation time and peak time of each outlet are extended and the consistency is increased to more than 80%.The proportion of dead zone volume decreases from 32.18%of bare tundish to less than 10%,and the proportion of plug flow volume increases from 9.52%to more than 20%.The maximum temperature difference of tundish decreases from 39.01 K of bare tundish to 16.22 K,and the temperature difference of each outlet decrease from 3.15 K of bare tundish to 0.31 K.
作者
李新
李浩
陶承岗
朱李艳
王欣瑶
何飞
LI Xin;LI Hao;TAO Chenggang;ZHU Liyan;WANG Xinyao;HE Fei(Special Steel Company,Ma'anshan Iron&Steel Co.,Ltd.,Ma'anshan 243000,Anhui,China;School of Metallurgical Engineering,Anhui University of Technology,Ma'anshan 243032,Anhui,China)
出处
《连铸》
北大核心
2025年第1期93-101,共9页
Continuous Casting
基金
安徽省高等学校科学研究资助项目(2022AH050293)。
关键词
中间包
流场
温度场
物理模拟
数值模拟
控流装置
tundish
flow field
temperature field
physical simulation
numerical simulation
flow control device
作者简介
李新(1986-),男,硕士,工程师.E-mail:39964956@qq.com;通信作者:何飞(1986-),男,硕士,副教授.E-mail:hf2573546@sina.com
