中文摘要：

基于电磁流体力学和电磁感应现象，对喷流式感应体熔沟内金属熔体的电磁场和流场进行数值模拟，并进行试验验证．结果表明，在熔沟旋转磁场作用下，金属熔体存在沿熔沟轴线的流动及熔沟进出口处二次环流；金属熔体表面磁感应强度与电流频率成反比，与输入电压成正比；金属熔体所受到电磁力最大值与磁感应强度的平方成正比，与频率成反比；金属熔体沿熔沟轴线流动的平均流速与磁感应强度成正比，与金属熔体密度平方根成反比．

英文摘要：

The coupling field of electromagnetic toree and flow was simulated tor the self-developed double-loop induction furnace. The results show that under the vertex electromagnetic field in channel, there exist the flow along the channel axes and the secondary circulation flow in the inlet and outlets of the channel. The magnetic flux density of liquid metal surface is in inverse proportion to the current frequency and in direct proportion to the input volt/current. The maximum electromagnetic force is in direct proportion to the square of magnetic flux density and in inverse proportion to the current frequency. The average flow rate along the. channel axes of the molten channel is in direet proportion to the magnetic flux density and in inverse proportion to the square root of the density of the molten metal.