Artículo

Sosa, R.; Artana, G.; Grondona, D.; Kelly, H.; Márquez, A.; Minotti, F. "Discharge characteristics of plasma sheet actuators" (2007) Journal of Physics D: Applied Physics. 40(3):663-673
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Abstract:

The electrical characteristics of a plasma sheet device used for subsonic airflow control are studied in this paper. Experiments are undertaken with a two-wire asymmetrical (different diameters, opposite polarity) electrode configuration connected to dc high voltage sources in the presence of a dielectric plate and under different gases (dry air, nitrogen and oxygen). For large distances electrode-plates it has been found that the discharge current consists of a purely dc component. The proximity of the plate reduces notably this dc current component until a limit situation for which the electrodes practically lay on the plate and a current pulsed regime is superimposed on the dc (small) component, thus establishing a plasma sheet regime. This regime could be reached only when the small wire was positive. This work establishes that the pulsed regime may be associated with a succession of positive streamers (cathode directed) which formation is promoted by different parameters of the gas and surface characteristics (thresholds of photoionization and photoemission, charge deposition, ...). The dc component seems to be produced by a small number of electrons originated in the ionization region of the negative corona that are amplified in the ionization region of the positive corona. The charged particles produced during the streamer propagation could contribute appreciably to the ion momentum transfer to the gas. This transfer should be due very likely to the drift of the charged species present in the streamer channel during the streamer collapsing phase. The source of momentum transfer associated with the dc current would always persist with a magnitude that depends on the intensity of this current. © 2007 IOP Publishing Ltd.

Registro:

Documento: Artículo
Título:Discharge characteristics of plasma sheet actuators
Autor:Sosa, R.; Artana, G.; Grondona, D.; Kelly, H.; Márquez, A.; Minotti, F.
Filiación:Laboratorio de Fluidodinámica, Universidad de Buenos Aires, Buenos Aires, Argentina
Departamento de Física, FCEN, CONICET - Universidad de Buenos Aires, Buenos Aires, Argentina
UBA, Argentina
CONICET, Argentina
Palabras clave:Ion momentum transfer; Subsonic airflow control; Surface characteristics; Dielectric materials; Electric discharge machining; Electrodes; Electrons; Momentum transfer; Plasma devices; Subsonic flow; Actuators
Año:2007
Volumen:40
Número:3
Página de inicio:663
Página de fin:673
DOI: http://dx.doi.org/10.1088/0022-3727/40/3/S04
Título revista:Journal of Physics D: Applied Physics
Título revista abreviado:J Phys D
ISSN:00223727
CODEN:JPAPB
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00223727_v40_n3_p663_Sosa

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Citas:

---------- APA ----------
Sosa, R., Artana, G., Grondona, D., Kelly, H., Márquez, A. & Minotti, F. (2007) . Discharge characteristics of plasma sheet actuators. Journal of Physics D: Applied Physics, 40(3), 663-673.
http://dx.doi.org/10.1088/0022-3727/40/3/S04
---------- CHICAGO ----------
Sosa, R., Artana, G., Grondona, D., Kelly, H., Márquez, A., Minotti, F. "Discharge characteristics of plasma sheet actuators" . Journal of Physics D: Applied Physics 40, no. 3 (2007) : 663-673.
http://dx.doi.org/10.1088/0022-3727/40/3/S04
---------- MLA ----------
Sosa, R., Artana, G., Grondona, D., Kelly, H., Márquez, A., Minotti, F. "Discharge characteristics of plasma sheet actuators" . Journal of Physics D: Applied Physics, vol. 40, no. 3, 2007, pp. 663-673.
http://dx.doi.org/10.1088/0022-3727/40/3/S04
---------- VANCOUVER ----------
Sosa, R., Artana, G., Grondona, D., Kelly, H., Márquez, A., Minotti, F. Discharge characteristics of plasma sheet actuators. J Phys D. 2007;40(3):663-673.
http://dx.doi.org/10.1088/0022-3727/40/3/S04