Analysis of Atomic Electronic Excitation in Nonequilibrium Air Plasmas

Electronic excitation of atoms is studied in nonequilibrium air plasmas with the electronic temperature be- tween 8000 K and 2000OK. By using the modified Saha-Boltzmann equation, our simplified method takes into account significant radiative processes and strong self-absorption of the vacuum ultrav...

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Published inChinese physics letters Vol. 31; no. 9; pp. 111 - 114
Main Author 何新 党伟华 贾红辉 尹红伟 张海良 常胜利 杨俊才
Format Journal Article
LanguageEnglish
Published 01.09.2014
Subjects
原子
玻尔兹曼方程
电子激发
真空紫外辐射
空气分析
辐射过程
非平衡态等离子体
非平衡等离子体
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ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/31/9/095204

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Summary:Electronic excitation of atoms is studied in nonequilibrium air plasmas with the electronic temperature be- tween 8000 K and 2000OK. By using the modified Saha-Boltzmann equation, our simplified method takes into account significant radiative processes and strong self-absorption of the vacuum ultraviolet lines. Calculations are carried out at three trajectory points of the Fire 1I flight experiment. Good agreement with the detailed collisional-radiative model is obtained, and the performance of this method in applications to highly nonequi- librium conditions is better than Park＇s quasi-steady-state model and Spradian-9.0. A short discussion on the influence of optical thickness of the vacuum ultraviolet radiation is also given. It costs about 2.9 ms on the average to solve one cell of the shock layer on a low cost computer, which shows that the present method is fast and efficient.
Bibliography:Electronic excitation of atoms is studied in nonequilibrium air plasmas with the electronic temperature be- tween 8000 K and 2000OK. By using the modified Saha-Boltzmann equation, our simplified method takes into account significant radiative processes and strong self-absorption of the vacuum ultraviolet lines. Calculations are carried out at three trajectory points of the Fire 1I flight experiment. Good agreement with the detailed collisional-radiative model is obtained, and the performance of this method in applications to highly nonequi- librium conditions is better than Park＇s quasi-steady-state model and Spradian-9.0. A short discussion on the influence of optical thickness of the vacuum ultraviolet radiation is also given. It costs about 2.9 ms on the average to solve one cell of the shock layer on a low cost computer, which shows that the present method is fast and efficient.
11-1959/O4
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/31/9/095204