Rise-Time Effect on Atmospheric Pulsed Dielectric Barrier Discharge:A Simulation Study Time at Atmospheric Pressure

The pulsed dielectric barrier discharge(DBD),at atmospheric pressure,was mathematically modeled,theoretically analyzed and numerically simulated.The influence of the rise-time in a single pulse on the DBD-plasma properties,including the e-density,e-temperature and potential distribution,was investigated.The simulated results show that the rise-time has a major impact.Specifically,as the rise-time increases from 25 to 100 ns,the time at which the Max/average e-density and Max e-temperature reach their peaks,coincides approximately with the instant at which the rise-time exactly comes to an end,and their peak heights linearly decreases;when it comes to the end of pulse fall-time,the reversal of field polarity occurs,the potential near the anode decreases and the potential near the cathode increases,accompanied by a decreasing potential distribution from cathode-to-anode;the pulsed voltage,at the instant when the reversal occurs,almost equals to the largest potential around the cathode.