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水中铜丝电爆炸放电通道模型及仿真

DOI: 10.13336/j.1003-6520.hve.2015.09.017, PP. 2943-2949

Keywords: 脉冲功率技术,水中铜丝电爆炸,相变,电阻率模型,放电等离子体通道,非线性电路仿真

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Abstract:

为研究水中金属丝电爆炸放电过程,基于比作用量模型和无量纲相似参数模型,提出了能够准确描述水中金属丝电爆炸的物理模型。该模型考虑了金属丝汽化时对外做功和辐射、热传等能量损耗,对比作用量模型进行了改进;并在此基础上,考虑了金属蒸汽击穿前的加热过程与击穿后的等离子体放电过程。结果表明欠阻尼振荡条件下,计算得到的放电电流和电压的峰值与实验数据的相对误差分别为5.4%和3.1%;临界阻尼时,该误差分别为11.3%和8.7%;因此该模型计算结果与实验数据相符,优于无量纲相似参数模型。

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