Discharge characteristics of plasma sheet actuators

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 diel...

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Autores principales:	Grondona, Diana Elena, Kelly, Héctor Juan, Marquez, Adriana B., Minotti, Fernando Oscar
Publicado:	2007
Materias:	Ion momentum transfer Subsonic airflow control Surface characteristics Dielectric materials Electric discharge machining Electrodes Electrons Momentum transfer Plasma devices Subsonic flow Actuators
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00223727_v40_n3_p663_Sosa http://hdl.handle.net/20.500.12110/paper_00223727_v40_n3_p663_Sosa
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00223727_v40_n3_p663_Sosa
record_format	dspace
spelling	paper:paper_00223727_v40_n3_p663_Sosa2023-06-08T14:50:22Z Discharge characteristics of plasma sheet actuators Grondona, Diana Elena Kelly, Héctor Juan Marquez, Adriana B. Minotti, Fernando Oscar Ion momentum transfer Subsonic airflow control Surface characteristics Dielectric materials Electric discharge machining Electrodes Electrons Momentum transfer Plasma devices Subsonic flow Actuators 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. Fil:Grondona, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Kelly, H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Márquez, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Minotti, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2007 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00223727_v40_n3_p663_Sosa http://hdl.handle.net/20.500.12110/paper_00223727_v40_n3_p663_Sosa
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Ion momentum transfer Subsonic airflow control Surface characteristics Dielectric materials Electric discharge machining Electrodes Electrons Momentum transfer Plasma devices Subsonic flow Actuators
spellingShingle	Ion momentum transfer Subsonic airflow control Surface characteristics Dielectric materials Electric discharge machining Electrodes Electrons Momentum transfer Plasma devices Subsonic flow Actuators Grondona, Diana Elena Kelly, Héctor Juan Marquez, Adriana B. Minotti, Fernando Oscar Discharge characteristics of plasma sheet actuators
topic_facet	Ion momentum transfer Subsonic airflow control Surface characteristics Dielectric materials Electric discharge machining Electrodes Electrons Momentum transfer Plasma devices Subsonic flow Actuators
description	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.
author	Grondona, Diana Elena Kelly, Héctor Juan Marquez, Adriana B. Minotti, Fernando Oscar
author_facet	Grondona, Diana Elena Kelly, Héctor Juan Marquez, Adriana B. Minotti, Fernando Oscar
author_sort	Grondona, Diana Elena
title	Discharge characteristics of plasma sheet actuators
title_short	Discharge characteristics of plasma sheet actuators
title_full	Discharge characteristics of plasma sheet actuators
title_fullStr	Discharge characteristics of plasma sheet actuators
title_full_unstemmed	Discharge characteristics of plasma sheet actuators
title_sort	discharge characteristics of plasma sheet actuators
publishDate	2007
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00223727_v40_n3_p663_Sosa http://hdl.handle.net/20.500.12110/paper_00223727_v40_n3_p663_Sosa
work_keys_str_mv	AT grondonadianaelena dischargecharacteristicsofplasmasheetactuators AT kellyhectorjuan dischargecharacteristicsofplasmasheetactuators AT marquezadrianab dischargecharacteristicsofplasmasheetactuators AT minottifernandooscar dischargecharacteristicsofplasmasheetactuators
_version_	1768543264175030272

Discharge characteristics of plasma sheet actuators

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