电介质中放电图形的计算机模拟

Computer Simulation for Discharge Pattern in Dielectrics

采用有限元法计算了针－平板电极系统的电场分布，考虑放电生长几率与局部电场的随机关系，计算机模拟出放电图形。借此求得分形维数。其结果与Ｂａｒｃｌａｙ的近似符合。证实了当放电几率场的幂指数η变大时，放电图形分枝减少。

By using finite element ( FE ) method and considering the stochastic dependence of the discharge growth probability on the local electric field, the discharge pattern and fractal dimension were obtained with calculation of distribution of electric field in system of needle-plate electrode by computer. The re- sults approximately agree with ones of Barclay and confirm that branching of discharge pattern is less, when η is more larger .