Abstract
This paper deals with characteristics of momentum added by a DBD Plasma actuator (PA) in uniform flow. The PA on a thin flat plate was located in uniform flow and velocity profiles in wakes of the PA was measured using a hot-wire anemometer. We investigated the momentum in flow filed added by PA, when velocity in the uniform flow was changed and voltage and frequency of input supplied to the PA were constant. As a result, the increase of the momentum is maximum value, when the induced velocity by PA (1.4m/s) is equal to the uniform flow velocity. In this case, the increasing rate of momentum was approximately 50%. On the other hand, if the difference to uniform flow velocity (6.0m/s) was large, the increasing rate of momentum was about 1%.
