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Heat Transfer Research
Facteur d'impact: 0.404 Facteur d'impact sur 5 ans: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.2013005889
pages 455-464

ELECTRON DENSITY OF PLASMA IN A THERMAL NONEQUILIBRIUM STATE

Jianqiao Li
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
Weidong Song
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
Jianguo Ning
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

RÉSUMÉ

A theoretical analysis to investigate the electron density of plasma in a thermal nonequilibrium state has been performed. A dimensional analysis was carried out to examine the factors that affect the electron density of plasma in a thermal nonequilibrium state. Three dimensionless numbers were obtained in addition to the ionization degree defined by the electron density and initial particle number density. Several numerical simulations of plasma by COMSOL were performed to calculate the ionization degree related to the three dimensionless numbers. By changing the three dimensionless numbers, respectively, the relationship between the ionization degree obtained by numerical simulation and the three dimensionless numbers was derived. The formula derived as a result of dimensional analysis was checked to be used for predicting the ionization degree of plasma in a thermal nonequilibrium state.


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