典型文献
Effects of argon blowing at tundish upper nozzle on multiphase flow behavior in nozzle
文献摘要：
In continuous casting,the argon blowing at the tundish upper nozzle is usually used to prevent nozzle clogging,whose effect is closely related to the migration of argon bubbles and the flow behavior of the liquid steel in the nozzle.Here,to investigate the effects of argon blowing at the tundish upper nozzle on multiphase flow behavior in nozzle,a three-dimensional model of the tundish-nozzle-mold was established for numerical simulation.The results indicate that the argon bubbles injected from the inner wall of the tundish upper nozzle first move downward along the nozzle wall under the action of the liquid steel.As the distance from the tundish upper nozzle increases,the argon bubbles gradually diffuse to the center of the nozzle.Compared with no argon blowing,the liquid steel velocity increases in the center of the nozzle and decreases near the wall with argon blowing.With increasing the argon flow rate,the concentration of bubbles in the nozzle increases,and the process of bubble group diffusion to the center region of the nozzle speeds up.This in turn increases the liquid steel velocity at the center of the nozzle but reduces near the wall.With increasing the casting speed,the con-centration of bubbles in the nozzle decreases,the length of the bubble group near the nozzle wall is extended,and the liquid steel velocity at the center region and near-wall region of the nozzle increases.The mechanism of argon blowing at the tundish upper nozzle to prevent nozzle clogging is mainly realized by the isolation effect of the argon bubble group on the inner wall of the nozzle.
文献关键词：
中图分类号：
作者姓名：
Xu-feng Qin;Chang-gui Cheng;Yang Li;Wei-li Wu;Yan Jin
作者机构：
The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China;Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China
文献出处：
引用格式：
[1]Xu-feng Qin;Chang-gui Cheng;Yang Li;Wei-li Wu;Yan Jin-.Effects of argon blowing at tundish upper nozzle on multiphase flow behavior in nozzle)[J].钢铁研究学报（英文版）,2022(04):588-600
A类：
tundish
B类：
Effects,argon,blowing,upper,nozzle,multiphase,flow,behavior,In,continuous,casting,usually,used,prevent,clogging,whose,closely,related,migration,bubbles,liquid,steel,Here,investigate,effects,three,dimensional,model,mold,was,established,numerical,simulation,results,indicate,that,injected,from,inner,wall,first,move,downward,along,under,action,distance,increases,gradually,diffuse,center,Compared,velocity,decreases,near,With,increasing,rate,concentration,process,group,diffusion,region,speeds,This,turn,but,reduces,length,extended,mechanism,mainly,realized,by,isolation
AB值：
0.283966
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