Modeling the lightning continuing current electric arc discharge and material thermal damage: Effects of combinations of amplitude and duration
Modeling the lightning continuing current electric arc discharge and material thermal damage: Effects of combinations of amplitude and duration
复制标题
对雷电持续电流电弧放电和材料热损伤进行建模：幅度和持续时间组合的影响
DOI：
10.1016/j.ijthermalsci.2020.106786
复制
发表时间：
2021-04
影响因子：
4.5
通讯作者：
Wang Yeqing
中科院分区：
文献类型：
--
作者：
Liu Yakun;Wang Yeqing
材料的损伤深度是考虑到雷电威胁的工业物体的关键参数。多雷电序列中的连续电流分量具有大的电荷转移，这通常导致导电材料的主导损伤深度。雷电持续电流的实验室模拟容易产生误解，因为在满足标准中200 C（±20%）的固定电荷要求时，电流幅度和持续时间有各种组合。采用基于经典磁流体力学方法的等离子体-材料统一有限元模型（UPM-FEM），分析了电流幅值-持续时间组合对电弧-材料相互作用的影响。采用UPM-FEM方法对不同物理过程产生的能量、材料表面的热流密度和电流密度以及材料损伤响应进行了预测，并对固定转移电荷下不同幅值-持续时间组合进行了比较。我们报告说，焦耳加热，热传导，辐射发射，和电子磁通量共同决定的能量预算注入到材料在低电流水平（≤300 A）。而在较高电流（≥500 A）下，与其他能量项相比，热传导的贡献较小。辐射热损失的显著增加将使电弧特性趋于饱和，从而导致材料损伤。建议采用大电流幅值的组合，以便在雷电持续电流试验中获得一致的电弧特性和材料损伤。
The damage depth of a material is a key parameter for industrial objects in consideration of the lightning threat. The continuing current component in a multiple lightning sequence features a large charge transfer, which often leads to the dominant damage depth for electrically conductive materials. Laboratory simulation of the lightning continuing current is prone to misinterpretation due to various combinations of the current amplitude and duration in fulfillment of the fixed charge requirement of 200 C (±20%) in standards. This study employs a Unified Plasma-Material Finite Element Model (UPM-FEM) that is developed based on the classical magnetohydrodynamics method to analyze the influence of the current amplitude-duration combinations on the arc-material interactions. The energy originated from different physical processes, the heat flux and current density on material surface, and the material damage response are predicted using the UPM-FEM and compared for different amplitude-duration combinations at a fixed transfer charge. We report that the Joule heating, thermal conduction, radiative emission, and electronic enthalpic flux jointly determine the energy budget injected to materials at low current levels (≤300 A). While at higher currents (≥500 A), the thermal conduction contributes less significantly compared to the other energy items. The more pronounced increase of radiative emission heat loss will bring a saturation trend in arc properties and the material damage. A combination with a big current amplitude is recommended for achieving consistent arc properties and material damage in lightning continuing current test.
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DOI：
10.1109/emceurope.2019.8871944
发表时间：
2019-09
期刊：
2019 International Symposium on Electromagnetic Compatibility - EMC EUROPE
影响因子：
--
作者：
C. Karch;Christian Paul;F. Heidler
通讯作者：
C. Karch;Christian Paul;F. Heidler
DOI：
--
发表时间：
2006
期刊：
--
影响因子：
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作者：
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通讯作者：
S. Arinaga;Kosuke Inoue;Takatoshi Matsushita;Fukahori-machi Nagasaki
影响因子：
4.7
作者：
S. Millen;A. Murphy;G. Abdelal;G. Catalanotti
通讯作者：
S. Millen;A. Murphy;G. Abdelal;G. Catalanotti
DOI：
10.1109/iclp.2016.7791402
发表时间：
2016-09
期刊：
2016 33rd International Conference on Lightning Protection (ICLP)
影响因子：
--
作者：
Yakun Liu;Hailiang Xia;Z. Fu;Xin Gao;Baoquan Liu
通讯作者：
Yakun Liu;Hailiang Xia;Z. Fu;Xin Gao;Baoquan Liu
DOI：
10.17077/etd.c1auwcsz
发表时间：
2016
期刊：
--
影响因子：
--
作者：
Yeqing Wang
通讯作者：
Yeqing Wang