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对大方坯连铸结晶器电磁搅拌过程的流场和温度场进行了数值模拟,并讨论了搅拌强度对流场和温度场的影响。结果表明:在结晶器电磁搅拌下,搅拌器区域的钢液变为水平旋转,使从水口向下吐出的钢水与向上回流的钢水流股相冲突,流股侵入深度变浅,从而使轴向温度迅速降低,径向温度升高,提高了热区位置,有利于传热;搅拌强度越大,钢水的二次流现象越明显,热区位置越高。
The numerical simulation of the flow field and the temperature field during the electromagnetic stirring process of the bloom continuous casting mold was carried out. The influence of the stirring intensity on the flow field and the temperature field was also discussed. The results show that under the electromagnetic stirring of the mold, the liquid steel in the agitator area turns into a horizontal rotation so that the molten steel spit out from the nozzle collides with the molten steel stream which is upwardly refluxed, and the penetration depth of the stream becomes shallower, so that the axial The temperature decreases rapidly and the radial temperature increases, which improves the position of the hot zone and is conducive to heat transfer. The greater the agitation intensity is, the more obvious the secondary flow of molten steel is, and the hot zone position is higher.