非平衡等离子体运输系数的数值分析  

Numerical analysis of the transport properties for no-equilibrium plasma

作　　者：樊丁[1] 黄勇[1] 张瑞华[1] 樊清华[1] 牛尾诚夫[2] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,兰州730050 [2]大阪大学接合科学研究所

出　　处：《焊接学报》2006年第2期31-34,共4页Transactions of The China Welding Institution

基　　金：教育部高等学校博士点专项基金(20040731001)

摘　　要：利用Chapm an-Enskog方法计算了非平衡氩等离子体的运输系数及压力、温度和电子-重离子温度系数θ的影响规律。电子和重粒子被视为两种不同气体,并利用广义Saha公式计算等离子体成分。结果表明,非平衡态等离子体运输系数与平衡态相比有较大差别,因而对于非平衡态等离子体若采用平衡态的运输系数计算会造成较大误差。Transport properties of non-equilibrium argon plasma were analyzed by using Chapman-Enskog method at low and high pressure and for various temperature-difference between electrons and heavy species.Electorns and heavy species were trenled as two different gases and a generalized Suha equation was used to calealate the plasma composition.The results show that the transport properties of no-equilibrium plasma are far different from that of local temperuture equilibrium(LTE) plasma.It will result in greater error if the transport properties for LTE plasma are applied to to no-equilibrium plasma.

关 键 词：非平衡等态离子体 运输系数 数值计算 双温气体 碰撞积分 

分 类 号：Q552.32[生物学—生物化学]