Lightning return stroke current models with specified channel‐base current: A review and comparison
Lightning return stroke current models with specified channel‐base current: A review and comparison
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DOI：
10.1029/jd095id12p20395
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发表时间：
1990-11
影响因子：
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通讯作者：
C. Nucci;G. Diendorfer;M. Uman;F. Rachidi;M. Ianoz;C. Mazzetti
中科院分区：
文献类型：
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作者：
C. Nucci;G. Diendorfer;M. Uman;F. Rachidi;M. Ianoz;C. Mazzetti
比较了五种雷击回路电流模型，即Bruce-Golde （BG）模型、传输线（TL）模型、Master， man, Lin, and Standler （MULS）模型、旅行电流源（TCS）模型和修正传输线（MTL）模型，它们在回路通道基处的电流与回路通道上的电流之间表现出简单的关系。通过在通道底部假设一个共同的电流波形，然后计算通道电流和电荷以及由此产生的电场和磁场。两个特征区分了这些模型：对回冲程波前的处理，以及从先导通道移除的电荷的时空分布。TL模型对于长时间场计算是不现实的，因为没有净电荷从通道中移除。其他四种模式产生的整体电场与自然闪电测量的电场有合理的近似
Compares five lightning return stroke current models that exhibit a simple relationship between the current at the return stroke channel-base and the current along the return stroke channel, namely the Bruce-Golde (BG) model, the transmission line (TL) model, the Master, Uman, Lin, and Standler (MULS) model, the Traveling Current Source (TCS) model, and the Modified Transmission Line (MTL) model, by assuming a common current wave shape at the channel base and then calculating the channel currents and charges and the resultant electric and magnetic fields. Two characteristics distinguish the models: the treatment of the return stroke wave front, and the spatial and temporal distribution of charge removed from the leader channel. The TL model is unrealistic for long-time field calculations owing to the fact that no net charge is removed from the channel. The other four models produce overall fields which are reasonable approximations to measured fields from natural lightning