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Edge effects in flow around a plasma actuator
Authors:Moralev  I A  Selivonin  I V
Affiliation:1.Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, 125412, Russia
;2.Moscow Power Engineering Institute, National Research University, Moscow, 111250, Russia
;
Abstract:

We have studied the structure of flow formed in the boundary layer at the lateral edge of the discharge zone of a dielectric barrier discharge plasma actuator. It is established that a region with nonzero component of tangential velocity exists near the plasma layer boundary. At some distance downstream of the actuator, a concentrated vortex is formed with the axis aligned with the flow direction. In the presence of two closely spaced boundaries of the plasma region, a pair of counter-rotating vortices is formed. Separate microdischarges in the plasma layer also appear to be a source of similar longitudinal vortices with smaller amplitude.

Keywords:
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