大气等离子体中氮氧化物粒子行为的数值模拟

利用一个空间零维大气等离子体模型对其中的氮氧化物在不同电离度情况下的变化规律进行了数值模拟,得到了放电后不同初始电子密度下的氮氧化物(包括NO,NO⁺,NO₂,NO₂⁺,N₂O,N₂O⁺,NO₃和N₂O₅)及影响其产消的主要反应物N和O₃的密度随时间的演化规律.结果表明,电子初始密度n_e0=10⁹ cm^-3时,NO和NO₂的去除率较高,氮氧化物总密度较小,最适合消除氮氧化物污染.同时,还对N和O₃随电离度变化的行为进行了分析.关键词：大气等离子体氮氧化物电离度数值模拟

Numerical simulation of NOx species behaviour in atmosphere plasma

A zero-dimensional model is used for studying the behaviors of NO_x in atmosphere plasmas with different ionization degrees. The temporal evolutions of NO_x (including NO, NO⁺, NO₂, NO⁺₂, N₂O, N₂O⁺, NO₃ and N₂O₅), N and O₃, the main important reactants which influence the producing and the consuming of NO_x, are obtained in different initial densities for afterglow plasmas. The results show that the removal rates of NO and NO₂ are higher when n_e0=10⁹ cm^-3, and the total nitrogen oxide density is lower, so it is suited for the removal of the pollution of NO_x. Some important reactants such as N and O₃ varying with the increase of ionization degree are also analyzed.