中国物理B ›› 2013, Vol. 22 ›› Issue (5): 55201-055201.doi: 10.1088/1674-1056/22/5/055201

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Impacts of air pressure on the evolution of nanosecond pulse discharge products

于锦禄a, 何立明a, 丁未b, 王育虔a, 杜纯a   

  1. a The Engineering Institute, Air Force Engineering University, Xi'an 710038, China;
    b Department of Training, Air Force Engineering University, Xi'an 710051, China
  • 收稿日期:2012-04-10 修回日期:2012-09-05 出版日期:2013-04-01 发布日期:2013-04-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51106179 and 51276196).

Impacts of air pressure on the evolution of nanosecond pulse discharge products

Yu Jin-Lu (于锦禄)a, He Li-Ming (何立明)a, Ding Wei (丁未)b, Wang Yu-Qian (王育虔)a, Du Chun (杜纯)a   

  1. a The Engineering Institute, Air Force Engineering University, Xi'an 710038, China;
    b Department of Training, Air Force Engineering University, Xi'an 710051, China
  • Received:2012-04-10 Revised:2012-09-05 Online:2013-04-01 Published:2013-04-01
  • Contact: Yu Jin-Lu E-mail:yujinlu1@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51106179 and 51276196).

摘要: Based on the nonequilibrium plasma dynamics of air discharge, a dynamic model of zero-dimensional plasma is established by combining the component density equation, the Boltzmann equation, and the energy transfer equation. The evolution properties of nanosecond pulse discharge (NPD) plasma under different air pressures are calculated. The results show that air pressure has a significant impact on the NPD products and on the peak value of particle number density for particles such as O atoms, O3 molecules, N2(A3) molecules in excited states, and NO molecules. It increases at first and then decreases with the increase of air pressure. On the other hand, the peak values of particle number density for N2(B3) and N2(C3) molecules in excited states are only slightly affected by the air pressure.

关键词: plasma, air pressure, evolution, numerical simulation

Abstract: Based on the nonequilibrium plasma dynamics of air discharge, a dynamic model of zero-dimensional plasma is established by combining the component density equation, the Boltzmann equation, and the energy transfer equation. The evolution properties of nanosecond pulse discharge (NPD) plasma under different air pressures are calculated. The results show that air pressure has a significant impact on the NPD products and on the peak value of particle number density for particles such as O atoms, O3 molecules, N2(A3) molecules in excited states, and NO molecules. It increases at first and then decreases with the increase of air pressure. On the other hand, the peak values of particle number density for N2(B3) and N2(C3) molecules in excited states are only slightly affected by the air pressure.

Key words: plasma, air pressure, evolution, numerical simulation

中图分类号:  (Ionization of plasmas)

  • 52.25.Jm
52.25.Dg (Plasma kinetic equations) 52.65.-y (Plasma simulation) 34.50.Ez (Rotational and vibrational energy transfer)