Simulation on characteristics of cylinder reactor dielectric barrier discharge

Two-dimensional simulation research on coaxial cylinder reactor dielectric barrier discharge at atmospheric pressure have been carried out using XOOPIC software. The process of micro-discharge form and evolution reappeared and the life-span of micro-discharge was about 4ns in the atmospherical argon discharge with the 20kHz and 5kV power supply. The distribution of electronics density, ion density, barrier surface charge density and electric field with the space and time were obtained. Extreme values of electron density, ion density and barrier surface charge density exist around anode on the dielectric surface. Comparing with typical flat panel DBD, electronics density and field intensity in the filamentary characteristic increase 2-3 order of magnitude. (authors)