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核聚变与等离子体物理 ›› 2011, Vol. 31 ›› Issue (2): 186-192.

• 等离子体应用 • 上一篇    

直流电弧等离子体双温度化学非平衡数值模拟

钱海洋,吴 彬   

  1. (中国科学院力学研究所等离子体与燃烧中心,北京 100080)
  • 收稿日期:2010-07-05 修回日期:2010-10-20 出版日期:2011-06-15 发布日期:2011-09-02
  • 作者简介:钱海洋(1984-),男,北京人,硕士研究生,从事等离子体物理研究。
  • 基金资助:

    国家自然科学基金资助项目(10375082)

A two-temperature chemical non-equilibrium modeling of DC arc plasma

QIAN Hai-yang, WU Bin   

  1. (Center for Plasma and Combustion Research, Institute of Mechanics, the Chinese Academy of Sciences, Beijing 100080)
  • Received:2010-07-05 Revised:2010-10-20 Online:2011-06-15 Published:2011-09-02

摘要:

采用二维轴对称双温度化学非平衡(2T-NCE)模型,模拟了带有水冷约束管的大气压直流电弧氩等离子体发生器。得出了不同工作参数下等离子体中电子温度、重粒子温度的变化关系,表明直流电弧等离子体有很强的非平衡特性,且变化规律十分明显。

关键词: 大气压, 直流电弧, 双温度, 化学非平衡

Abstract:

To a better understanding of non-equilibrium characteristics of DC arc plasma, a two-dimensional axisymmetric two-temperature chemical non-equilibrium (2T-NCE) model is applied for direct current arc argon plasma generator with water-cooled constrictor at atmospheric pressure. The results show that the electron temperature and heavy particle temperature has a relationship under different working parameters, indicating that DC arc plasma has a strong non-equilibrium characteristic, and the variation is obvious.

Key words: Atmospheric-pressure, DC arc, Two-temperature, Chemical non-equilibrium

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