电磁场作用下金属凝固过程的建模方法  

Modeling Methods for Solidification Process of Metal under Electromagnetic Field

作　　者：殷子豪 张帆[1] 仲红刚[1] YIN Zihao;ZHANG Fan;ZHONG Honggang(Center for Advanced Solidification Technology, Shanghai University, Shanghai 200444, China)

机构地区：[1]上海大学先进凝固技术中心,上海200444

出　　处：《上海金属》2022年第4期88-96,共9页Shanghai Metals

基　　金：国家重点研发计划(2017YFB0701802);河北省重点研发计划(20311006D)。

摘　　要：金属凝固过程往往包含多个物理化学现象,无论是有色合金还是钢铁的凝固都相当复杂,而电磁场处理进一步增加了其复杂性,导致数值模拟和试验验证都面临很大困难。总结了金属凝固过程电磁场、流场与温度场的主要数值模拟方法及其应用。阐述了电磁场作用下流场与温度场的耦合模型,并着重讨论了针对糊状区的处理方法。Solidification process of metal often involves a number of physical and chemical phenomena and the solidification of both non-ferrous alloy and iron and steel is quite complex,however,the electromagnetic field treatment further increases its complexity,resulting in great difficulties in numerical simulation and experimental verification.The main numerical simulation methods of electromagnetic field,flow field and temperature field in metal solidification process and their applications were summarized.The different electromagnetic field mathematical models in metal melt and their electromagnetic effects in melt are discussed.The mathematical model coupling flow field and temperature field under electromagnetic field was expounded,and the treatment method for mushy zone was discussed emphatically.

关 键 词：电磁场 流场 凝固 数值模拟 

分 类 号：TG111.4[金属学及工艺—物理冶金] TG244[金属学及工艺—金属学]