Abstract
The aim of this study is to investigate on the flow behavior in the wake behind a circular cylinder by induced jet using dielectric barrier discharge (DBD) plasma. The plasma was created using a wave form with bipolar voltage of 4 kVpp and frequency of 10 kHz, and the plasma actuators were mounted on the circular cylinder. The forward and backward jets for the main flow direction were induced by electrode arrangements of the plasma actuators. The flow field was visualized using a high-speed video camera, and the streamwise and vertical velocities ware calculated by dynamics PIV method at Reynolds number of 1.0×103. We discussed that the vortex motion around the cylinder, Reynolds stress profiles and the half width of wakes by the forward and backward jets. Also, the characteristic frequency of vortex shedding was confirmed from the continuous photographs.
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