Numerical model for electrical explosion of copper wires in water
Numerical model for electrical explosion of copper wires in water
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DOI：
10.1063/1.4968396
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发表时间：
2016-11
影响因子：
3.2
通讯作者：
K. Chung;Kern Lee;Y. Hwang;Deok-Kyu Kim
中科院分区：
文献类型：
--
作者：
K. Chung;Kern Lee;Y. Hwang;Deok-Kyu Kim
本文提出了一种分析铜线在水中电爆炸的简单而又相当精确的数值模型。利用适当的宽域状态方程(EOS)和铜的电导率，数值模型求解了电路方程和一维磁流体力学(MHD)方程。MHD方程以拉格朗日形式表示，以清楚地识别钢丝与周围水之间的界面。一种被称为最简单的状态方程的普通状态方程(QEOS)被用来为铜建立大范围的状态方程。在QEOS中，我们考虑了气液相变，这在分析丝爆系统中是至关重要的。对于铜的电导率，采用了从固态到部分电离等离子体态的半经验方程组。用微秒级脉冲电容放电对不同直径的铜线进行了实验验证。那个模仿者。
This paper presents a simple but quite accurate numerical model for analyzing electrical explosion of copper wires in water. The numerical model solves a circuit equation coupled with one-dimensional magneto-hydrodynamic (MHD) equations with the help of appropriate wide-range equation of state (EOS) and electrical conductivity for copper. The MHD equations are formulated in a Lagrangian form to identify the interface between the wire and surrounding water clearly. A quotidian EOS (QEOS) that is known as the simplest form of EOS is utilized to build wide-range EOS for copper. In the QEOS, we consider the liquid-vapor phase transition, which is critical in analyzing the wire explosion system. For the electrical conductivity of copper, a semi-empirical set of equations covering from solid state to partially ionized plasma state are employed. Experimental validation has been performed with copper wires of various diameters, which are exploded by a microsecond timescale pulsed capacitive discharge. The simulat...