Self-Organization of Microgap Dielectric-Barrier Discharge in Gas Flow

Symmetric self-organized discharge filaments have been observed in the 140-mum microgap dielectric-barrier discharge between two parallel glass plates. With increasing voltage, the number of filaments increases, and the distance between the filaments decreases. The gas flow velocity affects the arrangement of the filaments. The homogeneous structure appears around the upstream area at high flow velocity, and the homogeneous area spreads with increasing flow velocity.