Influence on discharge properties of esd subprocess from large speed of moving electrode

Moving electrode speed has strong effect on discharge parameters in short-gap electrostatic discharge. In view point of fluid mechanics, and based on Townsend theory and streamer theory of electrostatic discharge, theoretical analysis is presented to analyze mechanism of electrode speed effect on discharge parameters. An algorithm is proposed and the simulation result gives estimation of theory description proposed. Electrode fast speed weakens action of avalanche process while strengthens surface process in the whole process of electrostatic discharge. The result shows that discharge current raise up sharply with reduction of air pressure.