1995/04/10 by Jakob Stoustrup, O. Schedletzky, Steffen J. Glaser +4 · 1 citation
Biochemistry, Genetics and Molecular Biology · Chemistry · Engineering · #Advanced NMR Techniques and Applications #Electron Spin Resonance Studies #Fluid Dynamics and Turbulent Flows #Molecular spectroscopy and chirality #Plasma and Flow Control in Aerodynamics
paper · doi:10.1103/physrevlett.74.2921
openalex publication_date 2007/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/02
The active flow control is currently one the major issues in aerodynamics for reducing the drag, increasing the lift and controling instabilities. The aim of this study was to develop plasma actuators. The physical properties and their effects on subsonic flows were characterized. Two configurations were used: DC surface corona discharge and AC sine dielectric barrier discharge (DBD). Electrical and optical measurements showed that these plasmas consisted of several high frequency micro-discharges. The "ionic wind" induced by these actuators was non-stationary, quite slow (a few m/s) and strongly depended on geometrical and electrical configurations. This mechanical property was used for modifying the boundary layer evolving on a flat plate and on airfoils. A succession of DBD enabled to pre-tripped the boundary layer laminar-to-turbulent transition. Flow seperations on airfoil leading edge have been delayed or deleted by plasma actuators. Finally, new kinds of actuators were developped: a pulsed DBD and plasma jets generated perpendicularly to the wall.