采用数值模拟与现场实测相结合的方法，对大方坯结晶器电磁搅拌（M-EMS）过程进行了耦合数值模拟，研究了电磁搅拌参数及结晶器铜管厚度对钢液磁场和流场分布的影响。结果表明：当其他参数不变时，磁感应强度、电磁力和流速随着电流的增大而增加。磁感应强度随频率增加而减小，电磁力和流速随频率的增加而增大；且随着频率的增加，最大磁感应强度、电磁力和流速的变化值减小。对于连铸470mm×350mm大方坯，电磁搅拌电流和频率分别为550A和2Hz，结晶器铜板厚度为35mm时，能起到良好的电磁搅拌效果。
Combining with industrial experiment, a coupled numerical simulation of 470mm×350mm bloom was conducted during continuous casting with mold electromagnetic stirring(M-EMS). The influence of M-EMS current, frequency and mold thickness on distribution of magnetic field and flow field was investigated. The results show that magnetic flux density, electromagnetic force and velocity all increase with the coil current when keeping other parameters unalterable. Magnetic flux density decreases with the increase of frequency, but electromagnetic force and velocity increase with the frequency. With the increase of frequency, the variation of maximum magnetic flux density, electromagnetic force and velocity decrease. For 470mm×350mm bloom during continuous casting with M-EMS, the current,frequency and mold thickness of 550A, 2Hz and 35mm can play well stirring effect.
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