Abstract
Flow control effects of string-type dielectric barrier discharge plasma actuators (DBD-PAs) on flat plate and NACA0015 airfoil were experimentally investigated. For the displacement (δs) between metallic wire coated with insulative resin and exposed electrode less than 1 mm, flow speed is enlarged according to increase of δs and velocity vectors are distributed uniformly in comparison with that for δs > 1 mm. Active control of flow separation on a NACA0015 airfoil was carried out by embedding the metallic wire with δs = 1 mm at x/c = 0.05. C_L and C_D are improved for Re = 3.3×10^4 by inducing jets by the string-type DBD-PAs under continuous injection and pulse modulation as with conventional DBD-PAs.
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