电脉冲作用下铝铜熔体内电场分布规律研究

Investigation of Electric Field Distribution in Al-Cu Melt Under Electric Pulse

采用数值模拟与实验验证相结合的方法,对电脉冲作用下铝铜熔体内电场分布规律进行了探讨。结果表明,脉冲电场在熔体表层附近较强,随着熔体深度的增加,电场强度逐渐减弱;电极电导率越小,电脉冲作用范围越大,电极电导率越大,电脉冲作用范围越小;两电极间距越大,电场强度越弱,越有利于电场强度的均匀分布;对于电极电导率与熔体电导率相近的情况,电极的插入深度对电场的分布影响不大。

The distribution of electric field in Al-Cu melt under electric pulse field （PEF） was studied through combination of numerical simulation and experimental method. The results show that PEF intensity is strong in the surface layer of Al-Cu melt. With increase in the molten depth, PEF intensity gradually gradually becomes weak. Electrode conductivity has a large effect on the PEF distribution, and the smaller electrode conductivity has much more wider PEF distribution. The PEF intensity and the PEF＇ distribution scope are also determined by the distance of the electrodes, Large electrodedistance, which also causes weak PEF intensity, is beneficial to the PEF uniform distribution. If the electrode conductivity is close to the melt conductivity, the depth of electrodes immersed into the melt has little impact on the PEF distribution.