Abstract
Drag reduction is a technical issue on the reduction of carbon dioxide gas emission. Particularly, DBD plasma actuator is a promising technology on active control of the flow separation. In the present work, efficiency of the plasma actuator is investigated experimentally for a variety of parameters including dielectric material, thickness of the dielectric plate, and gap between two electrodes. It is found that: (a) efficiency increases substantially with decreasing thickness of the dielectric plate, however maximum value exists for the applied voltage; (b) as for materials, efficiency of polytetrafluoroethylene (PTFE) is 〜400% larger compared to polyoxybenzylmethylenglycolanhydride (Bakelite).
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