Simulation of streamer discharges as finitely conducting channels

被引：15

作者：

Gao, L ^{[1
]}

Larsson, A ^{[1
]}

Cooray, V ^{[1
]}

Scuka, V ^{[1
]}

机构：

[1] Uppsala Univ, Inst High Voltage Res, Uppsala, Sweden

来源：

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 1999年 / 6卷 / 01期

关键词：

D O I：

10.1109/94.752007

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents a two-dimensional simulation of positive streamers in air at atmospheric pressure in a quasi-uniform electric field. A streamer is assumed to consist of a hemispherical tip and a finitely conducting cylindrical channel with a constant axial potential gradient. The model predicts that E-g similar to 450 kV/m and the radius is r similar to 50 mu m in air at standard atmospheric conditions. Moreover, the estimated number of positive ions in the streamer head of stably propagating streamers, agrees with estimations based on more advanced streamer models. The model is used to predict the behavior of streamers in electrical discharges in a semi-uniform electric field and good agreement is found between experiment and theory. The computer simulation of such a simplistic model could be applied to predict the behavior of streamer discharges in complex electrode arrangements, including dielectric surfaces.

引用

页码：35 / 42

页数：8