连铸结晶器漩涡现象的物理模拟  

Physical Modeling of the Vortex Phenomenon in Continuous Casting Mould

作　　者：雷洪[1] 朱苗勇[1] 赫冀成[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110006

出　　处：《过程工程学报》2001年第1期36-39,共4页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金重点项目!(编号:59734080); 国家重点基础研究发展规划!(编号:G1998061500)

摘　　要：利用物理模型考察了操作参数对结晶器内漩涡产生频率的影响. 结果表明: 漩涡呈单个或成对形式在水口一侧间歇性出现，是由于两个相向表面流相互剪切而形成的；漩涡的出现频率随拉速的增加而增加，随水口浸入深度的增加而减小，随水口张角的减小而增大；通过改进水口设计可以阻止漩涡的形成.Water model was used to study the mechanism of vortex formation in the mould, and the effects of operation parameters on vortex formation were investigated. The results show that singular vortex or a pair of vortices appear intermittently on the one side of nozzle, and the formation of vortex is due to the interaction of two surface streams flowing inwards. The frequency of vortex increases with the augment of the casting speed, and decreases with the augment of the immersion depth and nozzle angle. The formation of vortex can be inhibited by optimizing the submerged entry nozzle.

关 键 词：连铸 结晶器 漩涡 物理模拟 

分 类 号：TF777[冶金工程—钢铁冶金]