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(Color online) Schematic of DBD plasma actuator positioned on a bluff body on a flow. A close-up of the electrode pair is shown to the left.
(Color online) Voltage excitation waveform and discharge current. The vertical markers represent the first and second laser pulses for PIV imaging, and three phase-locked locations within the waveform.
(Color online) PIV images of velocity in the near field of a DBD plasma actuator: (a) forward stroke of the dominant rf cycle, (b) backward stroke, and (c) forward stroke of the second, weaker rf cycle. Red color represents strong components of velocity toward the right, and blue represents flow velocity to the left.
(Color online) Ensemble-average PIV images of the velocity field for oxygen-enriched flow (top) and nitrogen-enriched flow (bottom). Black solid lines represent pseudostreamlines released in the flow. In this particular case, the electrode pair is placed on the bluff body at an angle of 30° along the half-cylinder.
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