Two-dimensional numerical simulation of radical generation in the positive corona discharge

被引：5

作者：

Kim, Youn Taeg ^{[1
]}

Whang, Ki Woong ^{[2
]}

机构：

[1] School of Electrical Engineering, Seoul National University, Seoul 151-742, Korea, Republic of

[2] Korea Cottrell Company, Seoul 121-200, Korea, Republic of

来源：

| 2000年 / IEEE, Piscataway, NJ, United States卷 / 28期

关键词：

Chemical reactions - Computer simulation - Diffusion - Electric fields - Electrons - Free radicals - Partial differential equations - Photoionization;

D O I：

10.1109/27.842918

中图分类号：

学科分类号：

摘要：

By a two-dimensional (2-D) numerical simulation of positive corona with extensive chemical reactions, two parameters such as E/Neff (effective electric field for electrical energy transfer) and G-factor are calculated. E/Neff weakly depends on the humidity but strongly depends on the applied voltage. As the applied voltage increases, the corona formation and propagation time decrease, but the other parameters show very weak dependence. Electron collision G-factors of OH, O radicals reach their maximum value at E/N approx. 150 Td but electron collision G-factor of N radical increase with E/N. Full chemical reaction considered G-factor shows different time evolution characteristics with E/Neff. Since the dominant reaction process for the N, O radical is through the electron collision, the electron collision G-factor and E/Neff well represent the full chemical reaction considered G-factor. But the OH radical is dominantly generated by the radical reactions. The G-factor of OH radical shows a time-delayed characteristic.

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