【摘要】 在介质阻挡放电等离子体N2/O2/H2O/HCHO体系中通过解Boltzmann方程,得到电子能量分布函数,利用得到的电子能量分布函数计算电子-分子碰撞反应速率常数.然后把有关的反应速率常数带入速率方程,计算得到该体系在介质阻挡放电时,·OH、HO2·和电子的浓度随时间的演变以及·OH、HO2·浓度随H2O、O2摩尔分数的变化,并将模拟结果与实验值进行了对比,两者符合得较好.更多还原

【Abstract】 Electron energy distribution functions for N2/O2/H2O/HCHO dielectric barrier discharge plasma were obtained by numerically solving the Boltzmann equation. The electron-molecule reaction constants were calculated using the computed electron energy distribution function. A space averaged chemical kinetics model in dielectric barrier discharge was reported. The evolution of ·OH, HO2· and electron as functions of time were studied. The influences of H2O and O2 molar ratios on the generations of ·OH and HO2· were also discussed. The calculated results were in good agreement with our experiments result.更多还原