摘要
从工程应用的角度，在假定雷电闪道是分形的，闪道中的电流传播速度为光速的前提下，用中点置换法生成分形弯曲闪道，并计算弯曲闪道的分形维数；同时利用闪道电磁辐射场精确解仿真直线闪道与分形闪道在不同距离的电磁辐射场；从分形学的角度研究了雷电回击的辐射场。
The work presented in this paper is slanted toward the engineering applications of fractals. First of all, the random midpoint algorithm is employed here to generate a fractal lightning channel based on that a tortuous channel be considered to be a fractal path. Then, the return stroke radiation is investigated with an exact solution to Maxwell equations, assumed that the current propagates along the channel at the speed of light. The fractal dimensions of the channel and its radiation are calculated, and many problems are presented here. Numeric results demonstrate that return stroke radiation is a fractal, and within the framework of employed approximations it has the same fractal dimension as channel path.
出处
《电网技术》
EI
CSCD
北大核心
1999年第4期11-14,18,共5页
Power System Technology
基金
国家自然科学基金
关键词
分形
闪道
电网
电流传播
电磁场辐射
仿真
fractal
lghtning channel
return stroke radiation
midpoint displacement algorithm
