Modeling of a thermo-electromagneto-hydrodynamic problem in continuous casting tundish with channel type induction heating

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• 作者：WANG QiangSHI YuemingLI BaokuanQI FengshengFumitaka Tsukihashi
• 会议时间：2013-06-01
• 关键词：induction heating ; magnetohydrodynamics ; heat transfer ; tundish
• 作者单位：WANG Qiang,SHI Yueming,LI Baokuan,QI Fengsheng(School of Materials and Metallurgy,Northeastern University,Shenyang 110819,Liaoning,China)Fumitaka Tsukihashi(Department of Advanced Materials Science,Graduate School of Frontier Sciences,The University of Tokyo,5-1-5 Kashiwanoha,Kashiwa,Chiba 277-8561,Japan)
• 母体文献：第五届宝钢学术年会论文集
• 会议名称：第五届宝钢学术年会
• 会议地点：上海
• 主办单位：中国金属学会
• 语种：chi

摘要

The induction heating is proposed to keep a constant casting temperature of the molten steel during the continuous casting process which is in favor of steel quality.A thermo-electromagneto-hydrodynamic model has been developed to understand the multi-physical field in a channel-type continuous casting tundish with induction heating.The mathematical model is coupled with the electromagnetic field,flow field and heat transfer.This article outlines the three-dimensional simulation of the joule heating and the electromagnetic force distribution which is important to the flow field and heat transfer of the molten steel in tundish.The finite element method was employed for the calculation of the electromagnetic model.The finite volume method was employed to study the fluid dynamic model.The results show that a current loop would be formed by the induced current through the channels.The joule heating and the electromagnetic force are generated because of the induced current.The temperature drop of the molten steel in tundish would be compensated by the joule heating effectively and the temperature distribution becomes more uniform.In addition,the molten steel flows upward after flows past the channel which would prolong the residence time of molten steel in the tundish.Due to the asymmetrical electromagnetic force in the channel,the molten steel has a rotating velocity when flows past the channel.