Experimental study of the electric wind induced by a dielectric barrier discharge plasma actuator

Authors: Vernet, J., Örlü, R., Efraimsson, G, Alfredsson, P.H.
Document Type: Conference
Pubstate: Published
Journal: Proc. of the Int. Conf. on Jets, Wakes and Separated Flows, ICJWSF-2013
Year: 2013


An experimental study is conducted on the electric wind produced by Dielectric Barrier Discharge (DBD) plasma actuators placed at the top of a half cylinder. Parameters as driving voltage, frequency, dielectric thickness and their influence on the efficiency of the actuator are investigated by means of velocity measurements using Laser Doppler Velocimetry. Mean profi les show that the plasma actuators are able to produce wall jets with velocities up to 4.5 m/s. Increasing the driving voltage and frequency increases the jet velocity and thus the momentum added by the actuators. The time variation of the electric wind is also investigated through phase-averaged measurements. The increase of induced velocities during both the forward and backward stroke of the high-voltage cycle shows agreement with the PUSH-push mechanism theory of DBD plasma actuators.