Abstract
A novel barrier-less plasma actuator (BL-PA), composed solely of a pair of parallel strip electrodes, is proposed for active flow control. The discharge characteristics of the BL-PA driven by negative nanosecond pulsed high voltage power supply were experimentally investigated. The BL-PA device was constructed by arranging strip electrodes with a span length of 100 mm and a width of 6 mm in a parallel configuration. A stable and uniform pulsed streamer plasma without spark formation was observed between the electrodes at a gap length of 6 mm. Under the same electrode condition, the applied voltage, pulse width, and discharge current were -16 kV, 90 ns, and -10 A, respectively. The energy density supplied to the plasma was estimated to be 47 mJ/m, which is 2.7 times greater than the value of 17 mJ/m observed in a conventional dielectric barrier discharge PA operated with nanosecond pulsed high voltage.
https://ror.org/02q8vhr64 
