电磁力驱动载流金属熔体内速度的差分计算

针对电磁场对熔融流体的作用特性,采用差分方法和人工可压缩法,研究了电磁场对熔融流体速度的控制作用.结果表明:得到了一个控制液流流动的最佳时间段.在此时间段内载流熔液受交流磁场作用时熔体有很好的稳定状态,抑制液流流动的效果最佳,而加稳恒磁场和无磁场作用则无此特性.另外,电磁场可以很好地控制熔融流体的流动性,可以对载流熔体流动起促进或抑制作用,选择的金属物理属性、电磁参数、时间历程等因素都会对熔体的流动速度产生影响.该成果可用在电磁冶金工业中施加电磁场以控制金属熔体流速的目的,具有一定的指导意义和参考价值.

Differential computation of velocity in conductive molten metal under electromagnetic force drive

According to the effect of an electromagnetic field on molten metal fluid,using differential method and pseudo-compressibility method,this study investigates the controlling effect of an electromagnetic field on the velocity of molten metal fluid.The results show that there is an optimal time period for controlling the fluid flow.In this time period,there is a stable state for current-carrying fluid under AC magnetic field and a best effect for controlling fluid flow.However,there is no such a property in a steady magnetic field and no magnetic field.In addition,the liquidity of molten fluid can be controlled in an electromagnetic field,which can enhance or restrain the flow of current-carrying fluid.The selection of metal physical attributes,electromagnetic parameters,and timing,etc could affect the molten fluid flow speed.These study results can be applied in the electromagnetic metallurgy industry for controlling the flow of molten fluid in an electric field.There are some guidance and reference values for future study and applications.