Title :
Effect of Pulse Polarity on Nanosecond Surface Dielectric Barrier Discharge
Author :
Lei Pang ; Kun He ; Dong Xu Di
Author_Institution :
Inst. of High Voltage Technol., Xi´an Jiaotong Univ., Xi´an, China
Abstract :
This paper presents the optical emission characteristics of a surface dielectric barrier discharge sustained by repetitive nanosecond pulses with different polarities in the subsonic airflows. The plasma images presented here show that the positive polarity pulsed discharge is stable in the airflows, appearing as a brush-type discharge. While the negative polarity pulsed discharge plasma becomes a filamentary pattern that is evidently spatial inhomogeneous in quiescent air, it behaves unstable in airflows.
Keywords :
dielectric-barrier discharges; flow control; plasma diagnostics; surface discharges; brush-type discharge; filamentary pattern; nanosecond surface dielectric barrier discharge; negative polarity pulsed discharge plasma; optical emission characteristics; positive polarity pulsed discharge plasma; pulse polarity effect; quiescent air; subsonic airflows; Discharges (electric); Electrodes; Fault location; Plasma temperature; Surface discharges; Flow control; nanosecond discharge plasma; surface dielectric barrier discharge; surface dielectric barrier discharge.;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2014.2320278
