Numerical Simulation on Streamer Discharge of Short Air Gap of Atmospheric Air

The hydrodynamic model of streamer discharge in air at atmospheric pressure is presented, and the finite element and flux-corrected-transport (FE-FCT) method is adopted to solve the model. To increase the efficiency of computing, the adaptive mesh method and parallel computing method are introduced. The streamer discharge in air between rod-Plane electrode is simulated by the numerical method. The formation and propagation of streamer is numerically observed. The results predicted by the model are in good agreement with that of experimental measurement. The influence of applied voltage and radius of rod electrode on the streamer characteristic are also investigated. The research was based upon the physical theory of gas discharge, get some characteristics of streamer which are difficult to measure directly such as the space charge, electric field distribution.