Spatial distribution of the discharge characteristics in dielectric barrier discharge with asymmetric stripe electrode
In this paper,an asymmetric dielectric barrier discharge device with horizontal and vertical stripe water electrodes is designed.The electric field generated by this device exhibits different distributions at different sections of the discharge gap,which has S4 point group symmetry.The influence of this electric field on the discharge characteristics is examined by estimating the spatiotemporal characteristics of the discharge using a photomultiplier tube and an intensified charge-coupled device(ICCD).The findings revealed that the amount of charge ΔQ estimated by the optical signal integration is the least,and the discharge channel is the thinnest in the midplane of the discharge gap.The spatial distribution by a single discharge filament for several applied voltage periods is explored using ICCD.The spatial position distribution of the filament near the electrode is consistent with the electric field distribution.The applied electric field produced by the asymmetric dielectric barrier discharge device was numerically simulated by solving the Laplace equation.The spatial distribution of the electric field intensity generated by the device at different sections of the gas gap changes with distance away from the electrode.It evolves from the horizontal stripe distribution near one electrode to the square array distribution at the midplane of the gas gap and finally to the vertical stripe distribution near the other electrode,which has S4 point symmetry.The above experimental and simulated results reveal that the spatial characteristics of the discharge produced by the asymmetric dielectric barrier discharge device are related to the spatial distribution of the electric field intensity.
dielectric barrier dischargenon-uniform electric fieldspatiotemporal characteristics of discharge
万方数据
维普
