Numerical simulation of filamentary discharge controlled by dielectric barrier at atmospheric pressure
大气压介质阻挡丝状放电时空演化数值模拟

The spatio-temporal evolution of filamentary discharge in dielectric barrier discharge at atmospheric pressure is studied. A two-dimensional model was solved with uniform initial conditions. The simulation results reveal that the breakdowns take place continuously at different positions and gradually spread all over the discharge space. It is found that under certain conditions the splitting and uniting of filaments can occur, which has been observed in experiments. The splitting of filaments leads to the generation of new filament and the uniting reduces the number density of filaments in discharge space. The simulation shows that the charges on barrier surface play a dominant role in determining the global spatio-temporal evolution of filamentary discharge.