Abstract
Several studies have shown that a surface dielectric barrier discharge (DBD) may be used as an electrohydrodynamic (EHD) actuator in order to control airflows. In this paper, a parametric study has been performed in order to increase the velocity of the ionic wind induced by such actuators. The results show that an optimization of geometrical and electrical parameters allows us to obtain a time-averaged ionic wind velocity up to 8 m/s at 0.5 mm from the wall. Moreover, non-stationary measurements of the induced wind have been performed with synchronized records of current and voltage signals. These experiments show that the DBD actuator seems to generate a pulsed velocity at the same frequency than the applied high voltage.
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Acknowledgments
The authors gratefully acknowledge the technical and financial support of SNECMA (SAFRAN Group) (Contract N°920 430961). This work has been performed in the frame of a working group including researchers from two CNRS laboratory, LAPLACE (LAboratoire PLAsma et Conversion d’Energie) and LEA (Laboratoire d’Etudes Aérodynamiques) and also from ONERA (Office National d’Etudes et de Recherches Aérospatiales). The authors would like to thank members of this group for sharing their results and for fruitful discussions.
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Forte, M., Jolibois, J., Pons, J. et al. Optimization of a dielectric barrier discharge actuator by stationary and non-stationary measurements of the induced flow velocity: application to airflow control. Exp Fluids 43, 917–928 (2007). https://doi.org/10.1007/s00348-007-0362-7
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DOI: https://doi.org/10.1007/s00348-007-0362-7