非对称二流中间包夹杂物碰撞长大行为研究  

Study on Collision and Growth of Inclusions in a Two-Strand Unsymmetrical Tundish

作　　者：赵岩[1] 耿佃桥[2] 雷洪[2] 陈海耿[1] 赫冀成[2] 孙中强[3] 邢国成[3] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110819 [2]东北大学材料电磁过程研究教育部重点实验室,辽宁沈阳110819 [3]东北大学冶金技术研究所有限公司,辽宁沈阳110819

出　　处：《工业加热》2011年第5期59-62,共4页Industrial Heating

基　　金：国家高技术研究发展计划 (2009AA03Z530);国家自然科学基金和上海宝钢集团公司联合资助项目(50834010);国家自然科学基金资助项目(50974146);中央高校基本科研业务费(N100409007)

摘　　要：采用数值模拟方法考察了非对称二流中间包内夹杂物碰撞长大行为,计算结果表明:挡墙对中间包流场影响较大,有利于控制中间包内钢液湍流流动;安装挡墙后中间包内湍动能耗散率分布更均匀,最大湍动能耗散率为无挡墙时最大值的1/5;挡墙对中间包夹杂物空间分布影响较大;挡墙的安装有利于提高夹杂物去除率,可有效地增强对直径>50的大尺寸夹杂物的去除。A mathematical model was developed to investigate the collision and growth behavior of inclusions in a two-strand unsymmetrical tundish. The numerical results indicate that the baffles has a great effect on the fluid flow and is helpful to control the turbulent flow in tundish. The turbulent kinetic energy dissipation rate is more uniform in the tundish with baffle and the maximum value is about one fifth of that in the tundish without baffle. The baffle in tundish can change the distribution of inclusions and increase the inclusion removal rate. Furthermore, the removal rate for inclusions larger than 50 can be increased greatly in tundish with baffle.

关 键 词：非对称 中间包 夹杂物 碰撞长大 数值模拟 

分 类 号：TF769.2[冶金工程—钢铁冶金]