Positive and negative sawtooth signals applied to a DBD plasma actuator – influence on the electric wind
| Autor: | Eric Moreau, N. Balcon, Gerard Touchard, Nicolas Benard, Y. Lagmich, Jean-Pierre Boeuf |
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| Přispěvatelé: | Laboratoire d'Etudes Aérodynamiques (LEA), Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS), Groupe de Recherche Energétique, Plasmas et Hors Equilibre (LAPLACE-GREPHE), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées |
| Rok vydání: | 2009 |
| Předmět: |
Airflow
Sawtooth wave 01 natural sciences [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] 010305 fluids & plasmas Ion wind Optics Physics::Plasma Physics 0103 physical sciences Waveform [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] Electrical and Electronic Engineering Plasma actuator ComputingMilieux_MISCELLANEOUS Physics::Atmospheric and Oceanic Physics [PHYS]Physics [physics] 010302 applied physics Physics business.industry Mechanics Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Vortex Particle image velocimetry business Actuator Biotechnology |
| Zdroj: | Proceedings of The 11th International Conference on Electrostatics Proceedings of The 11th International Conference on Electrostatics, May 2009, Valencia, Spain Journal of Electrostatics Journal of Electrostatics, Elsevier, 2009, Vol. 67 (n° 2-3), pp. 140-145. ⟨10.1016/j.elstat.2009.01.019⟩ |
| ISSN: | 0304-3886 |
| DOI: | 10.1016/j.elstat.2009.01.019 |
| Popis: | doi:10.1016/j.elstat.2009.01.019; The influence of the electric signal shape applied to a surface dielectric barrier discharge (DBD) actuator is investigated in order to optimise the produced electric wind. This report also gives insights on the mechanisms involved in the electro-fluido-dynamic (EFD) operated by actuators based on atmospheric non-thermal discharges in air. The parameters of the electric signal that maximises the produced electric wind in quiescent air are investigated with a positive and negative sawtooth waveforms. The induced airflow properties are observed with a particle image velocimetry (PIV) set-up. The positive sawtooth waveform results in a more filamentary discharge and generates an electric wind with maximum velocities close to the active air exposed electrode. This contrasts with the negative sawtooth waveform that does not create as many filaments and induces electric wind velocities more homogeneously distributed along the dielectric surface. Even though the velocities values are of the same order, the shape of the vortex generated above the air exposed electrode is very dependant on the waveform. |
| Databáze: | OpenAIRE |
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