大气压氩气介质阻挡放电特性的一维粒子仿真

One-dimensional particle simulation of characteristics of dielectric barrier discharge in atmospheric pressure argon

介质阻挡放电(DBD)是产生低温等离子体的一种常见放电方式。本文建立了大气压下氩气DBD的一维PIC/MCC模型,采用了粒子自适应权重(APM)以及基于OpenMPI的并行计算策略,考虑了带电粒子在介质板上的积累以及复合反应。本文针对频率500 kHz,幅值电压3 kV正弦电压激励下放电的时空演化特性进行仿真研究,得到了其汤森放电、辉光放电等阶段中的放电特征,研究了电压幅值、气隙间距、介质板介电常数等参数对放电特性的影响。

Dielectric barrier discharge(DBD)is a common form of discharge that generates low temperature plasma.In this paper,a one-dimensional PIC/MCC model for the DBD of atmospheric pressure is developed.We used adapted particle management(APM)and parallel computing strategy based on OpenMPI,and considered the accumulation of charged particles on the dielectric board and recombination reactions.In this paper,the spatial and temporal evolution of the discharge driven by sinusoidal voltage with a frequency of 500 kHz and amplitude of 3 kV is studied.The discharge characteristics in its Townsend discharge and glow discharge process are obtained,and the effects of parameters including voltage amplitude,gap distance,relative permittivity of dielectric on the discharge characteristics are studied.