不同流速对LTE态下氢等离子体特性的研究  

Influence of Flow Velocity on Characteristics of Hydrogen Plasma in Local Thermal Equilibrium

作　　者：陈峰[1] 张浚源[1] 赵成利[1] 孙伟中[2] 田树平[2] 张晋敏[1] 苟富均[1,3] 

机构地区：[1]贵州大学理学院,贵阳550025 [2]四川大学原子核科学技术研究所辐射物理及技术教育部重点实验室,成都610064 [3]荷兰皇家科学院等离子体所,荷兰2300

出　　处：《真空科学与技术学报》2012年第11期1009-1015,共7页Chinese Journal of Vacuum Science and Technology

基　　金：国际热核聚变实验堆(ITER)计划专项(批准号:2009GB104006)资助的课题

摘　　要：采用二维流体力学模型研究了多级直流弧放电装置中流速对处于局部热平衡状态下氢等离子体特性的影响。分析了氢等离子体中心轴线处电场和压强的分布情况;各粒子密度在通道中的分布状态;通道出口处等离子体温度以及电导率的分布情况。模拟结果表明,随着流速的增大,中心轴线处电场和压强均增大;通道中氢等离子体的各粒子密度变化很小;通道出口处等离子体温度以及电导率在出口处沿径向的分布影响不大。The hydrogen plasma in local thermal equilibrium,generated by cascaded arc discharge,was modeled and simulated with the software package PLASIMO,developed by Einhoven University.With the 2-D fluid model,the influence of hydrogen velocity on the plasma characteristics was evaluated,including the axial distributions of electric field and pressure,the radial density distributions of the different particles（H2,H＋2 H＋,and H） of the plasma in the passageway,and the distributions of plasma temperature and its electric conductivity at the exit of the passageway.The simulated results show that the velocity strongly affects the axial distributions of electric field and pressure;but rather weakly on other characteristics.As the velocity increases,the axial distributions of the field and pressure increased.

关 键 词：氢等离子体 局部热平衡 多级弧 流体 

分 类 号：O531[理学—等离子体物理] O539[理学—物理]