Abstract
The aim of this study is to investigate on frequency shift of vortex shedding from a circular cylinder by introducing jet with dielectric barrier discharge (DBD) plasma. The electrode of DBD plasma was mounted on the circular cylinder. A constant AC wave with voltage of 2 kV and frequency of 10 kI-Iz is applied to the electrode. The forward and backward jets to the main flow direction were induced by electrode arrangements. The time-averaged velocity profiles and the vortex shedding frequency in the wake behind the circular cylinder were measured by I-type hot wire anemometer at Reynolds number of 1.0 ×10^3. We discussed on the wake with forward jets and backward jets.
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