A numerical study of arc-splitting processes with eddy-current effects
A numerical study of arc-splitting processes with eddy-current effects
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发表时间：
2008-09
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通讯作者：
F. Yang;M. Rong;Z. Sun;Y. Wu;W. Wang
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作者：
F. Yang;M. Rong;Z. Sun;Y. Wu;W. Wang
本文主要对裂弧过程中电弧运动产生的电极和隔板中的涡流等离子体行为进行数值研究。采用三维磁流体力学(MHD)模型对拉伸和劈裂过程进行了模拟。在没有外加磁场的情况下，通过温度分布详细地描述了电弧的运动。通过计算结果，观察了铁磁分离板上弧根的产生过程。除列电压外，电弧电压中还包含了护套电压，可用一个简单的非线性电阻模型来表示。计算中考虑了铁磁材料的非线性磁导率的影响。
This paper focuses on the numerical investigation of the arc plasma behaviour with eddy currents mainly in electrodes and splitter plate generated by arc motion in arc splitting process. The elongation and splitting process are simulated through a three-dimensional (3D) magneto-hydro-dynamic (MHD) model. Without external magnetic field, the arc motion is described in detail by the temperature distribution. The arc roots generating process on the ferromagnetic splitter plate is observed through the calculation results. Besides column voltage, sheath voltage is also included in arc voltage, which is expressed by a simple nonlinear resistor model. The effect of ferromagnetic material's nonlinear permeability is involved in the calculation.