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采用数值模拟与实验验证相结合的方法,对电脉冲作用下Al-5%Cu熔体内电场分布规律进行了研究。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;电极电阻率越小,电脉冲在熔体内部形成的电场强度越大,电极电阻率越大,电脉冲在熔体内部形成的电场强度越小;两电极间距越大,熔体内部电场强度越弱,越有利于电场强度的均匀分布;对于电极电阻率与熔体电阻率相近的情况下,电极插深对熔体内电场分布影响不大。
The electric field distribution in Al-5% Cu melt under the action of electric pulse was studied by the combination of numerical simulation and experimental verification. The results show that the pulsed electric field is stronger near the melt surface and the electric field strength decreases with the increase of the melt depth. The smaller the electrode resistivity, the larger the electric field strength of the electric pulse in the melt and the larger the electrode resistivity , The smaller the electric field formed by the electric pulse in the melt; the larger the distance between the two electrodes, the weaker the electric field strength inside the melt, the more conducive to the uniform distribution of the electric field strength; for the case that the electrode resistivity and the melt resistivity are similar , The depth of electrode insertion has little effect on the electric field distribution in the melt.