Modelling of the Plasma–Sheath Boundary Region in Wall-Stabilized Arc Plasmas: Unipolar Discharge Properties.

Autores
Mancinelli, Beatriz; Prevosto, Leandro; Chamorro, Juan Camilo; Minotti, Fernando; Kelly, Héctor
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión aceptada
Descripción
A two-dimensional model of the non-equilibrium unipolar discharge occurring in the plasma–sheath boundary region of a transferred-arc was developed. This model was used to study the current transfer to the nozzle (1 mm diameter) of a 30 A arc cutting torch operated with oxygen. The energy balance and chemistry processes in the discharge were described by using a kinetic block of 45 elementary reactions and processes with the participation of 13 species including electronically excited particles. The nonlocal transport of electrons was accounted for into the fluid model. The dependence of the ion mobility with the electric field was also considered. Basic discharge properties were described. It has been found that a large part (* 80%) of the total electric power (1700 mW) delivered in the bulk of the sheath region is spent in heating the positive ions and further dissipated through collisions with the neutral particles. The results also showed that the electron energy loss in inelastic collisions represents only * 25% of the electron power and that about 63% of the power spent on gas heating is produced by the ion– molecule reaction, the electron–ion and ion–ion recombination reactions, and by the electron attachment. The rest of the power converted into heat is contributed by dissociation by electron-impact, dissociative ionization and quenching of O(1 D). Some fast gas heating channels which are expected to play a key role in the double-arcing phenomena in oxygen gas were also identified.
Fil: Prevosto, Leandro. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. CONICET. Santa Fe; Argentina.
Fil: Chamorro, Juan Camilo. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.
Fil: Minotti, Fernando. Universidad de Buenos Aires. Departamento de Física, Facultad de Ciencias Exactas y Naturales. CONICET. Instituto de Física de Plasma. Argentina.
Fil: Kelly, Héctor. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.
Fil: Mancinelli, Beatriz. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.
Peer Reviewed
Materia
Plasma–sheath.
Wall-stabilized arc.
Unipolar discharge.
Nivel de accesibilidad
acceso abierto
Condiciones de uso
2024-02-16T00:46:36Z
Repositorio
Repositorio Institucional Abierto (UTN)
Institución
Universidad Tecnológica Nacional
OAI Identificador
oai:ria.utn.edu.ar:20.500.12272/9502
Acceder
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network_acronym_str RIAUTN
repository_id_str a
network_name_str Repositorio Institucional Abierto (UTN)
spelling Modelling of the Plasma–Sheath Boundary Region in Wall-Stabilized Arc Plasmas: Unipolar Discharge Properties.Mancinelli, BeatrizPrevosto, LeandroChamorro, Juan CamiloMinotti, FernandoKelly, HéctorPlasma–sheath.Wall-stabilized arc.Unipolar discharge.A two-dimensional model of the non-equilibrium unipolar discharge occurring in the plasma–sheath boundary region of a transferred-arc was developed. This model was used to study the current transfer to the nozzle (1 mm diameter) of a 30 A arc cutting torch operated with oxygen. The energy balance and chemistry processes in the discharge were described by using a kinetic block of 45 elementary reactions and processes with the participation of 13 species including electronically excited particles. The nonlocal transport of electrons was accounted for into the fluid model. The dependence of the ion mobility with the electric field was also considered. Basic discharge properties were described. It has been found that a large part (* 80%) of the total electric power (1700 mW) delivered in the bulk of the sheath region is spent in heating the positive ions and further dissipated through collisions with the neutral particles. The results also showed that the electron energy loss in inelastic collisions represents only * 25% of the electron power and that about 63% of the power spent on gas heating is produced by the ion– molecule reaction, the electron–ion and ion–ion recombination reactions, and by the electron attachment. The rest of the power converted into heat is contributed by dissociation by electron-impact, dissociative ionization and quenching of O(1 D). Some fast gas heating channels which are expected to play a key role in the double-arcing phenomena in oxygen gas were also identified.Fil: Prevosto, Leandro. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. CONICET. Santa Fe; Argentina.Fil: Chamorro, Juan Camilo. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.Fil: Minotti, Fernando. Universidad de Buenos Aires. Departamento de Física, Facultad de Ciencias Exactas y Naturales. CONICET. Instituto de Física de Plasma. Argentina.Fil: Kelly, Héctor. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.Fil: Mancinelli, Beatriz. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.Peer Reviewed2024-02-16T00:46:36Z2024-02-16T00:46:36Z2017info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articulopdfapplication/pdfPlasma Chem Plasma Process.http://hdl.handle.net/20.500.12272/950210.1007/s11090-017-9859-xengenginfo:eu-repo/semantics/openAccess2024-02-16T00:46:36Zhttp://creativecommons.org/licenses/by-nc-nd/4.0/Attribution-NonCommercial-NoDerivatives 4.0 InternacionalMancinelli, Beatriz.Creative Commons http://creativecommons.org/licenses/by-nc-nd/4.0/ Attribution-NonCommercial-NoDerivatives 4.0 Internacional Este trabajo puede ser utilizado con fines académicos y de estudio.reponame:Repositorio Institucional Abierto (UTN)instname:Universidad Tecnológica Nacional2026-09-24T12:46:37Zoai:ria.utn.edu.ar:20.500.12272/9502instacron:UTNInstitucionalhttp://ria.utn.edu.ar/Universidad públicaNo correspondehttp://ria.utn.edu.ar/oaigestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:a2026-09-24 12:46:37.807Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacionalfalse
dc.title.none.fl_str_mv Modelling of the Plasma–Sheath Boundary Region in Wall-Stabilized Arc Plasmas: Unipolar Discharge Properties.
title Modelling of the Plasma–Sheath Boundary Region in Wall-Stabilized Arc Plasmas: Unipolar Discharge Properties.
spellingShingle Modelling of the Plasma–Sheath Boundary Region in Wall-Stabilized Arc Plasmas: Unipolar Discharge Properties.
Mancinelli, Beatriz
Plasma–sheath.
Wall-stabilized arc.
Unipolar discharge.
title_short Modelling of the Plasma–Sheath Boundary Region in Wall-Stabilized Arc Plasmas: Unipolar Discharge Properties.
title_full Modelling of the Plasma–Sheath Boundary Region in Wall-Stabilized Arc Plasmas: Unipolar Discharge Properties.
title_fullStr Modelling of the Plasma–Sheath Boundary Region in Wall-Stabilized Arc Plasmas: Unipolar Discharge Properties.
title_full_unstemmed Modelling of the Plasma–Sheath Boundary Region in Wall-Stabilized Arc Plasmas: Unipolar Discharge Properties.
title_sort Modelling of the Plasma–Sheath Boundary Region in Wall-Stabilized Arc Plasmas: Unipolar Discharge Properties.
dc.creator.none.fl_str_mv Mancinelli, Beatriz
Prevosto, Leandro
Chamorro, Juan Camilo
Minotti, Fernando
Kelly, Héctor
author Mancinelli, Beatriz
author_facet Mancinelli, Beatriz
Prevosto, Leandro
Chamorro, Juan Camilo
Minotti, Fernando
Kelly, Héctor
author_role author
author2 Prevosto, Leandro
Chamorro, Juan Camilo
Minotti, Fernando
Kelly, Héctor
author2_role author
author
author
author
dc.subject.none.fl_str_mv Plasma–sheath.
Wall-stabilized arc.
Unipolar discharge.
topic Plasma–sheath.
Wall-stabilized arc.
Unipolar discharge.
dc.description.none.fl_txt_mv A two-dimensional model of the non-equilibrium unipolar discharge occurring in the plasma–sheath boundary region of a transferred-arc was developed. This model was used to study the current transfer to the nozzle (1 mm diameter) of a 30 A arc cutting torch operated with oxygen. The energy balance and chemistry processes in the discharge were described by using a kinetic block of 45 elementary reactions and processes with the participation of 13 species including electronically excited particles. The nonlocal transport of electrons was accounted for into the fluid model. The dependence of the ion mobility with the electric field was also considered. Basic discharge properties were described. It has been found that a large part (* 80%) of the total electric power (1700 mW) delivered in the bulk of the sheath region is spent in heating the positive ions and further dissipated through collisions with the neutral particles. The results also showed that the electron energy loss in inelastic collisions represents only * 25% of the electron power and that about 63% of the power spent on gas heating is produced by the ion– molecule reaction, the electron–ion and ion–ion recombination reactions, and by the electron attachment. The rest of the power converted into heat is contributed by dissociation by electron-impact, dissociative ionization and quenching of O(1 D). Some fast gas heating channels which are expected to play a key role in the double-arcing phenomena in oxygen gas were also identified.
Fil: Prevosto, Leandro. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. CONICET. Santa Fe; Argentina.
Fil: Chamorro, Juan Camilo. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.
Fil: Minotti, Fernando. Universidad de Buenos Aires. Departamento de Física, Facultad de Ciencias Exactas y Naturales. CONICET. Instituto de Física de Plasma. Argentina.
Fil: Kelly, Héctor. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.
Fil: Mancinelli, Beatriz. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.
Peer Reviewed
description A two-dimensional model of the non-equilibrium unipolar discharge occurring in the plasma–sheath boundary region of a transferred-arc was developed. This model was used to study the current transfer to the nozzle (1 mm diameter) of a 30 A arc cutting torch operated with oxygen. The energy balance and chemistry processes in the discharge were described by using a kinetic block of 45 elementary reactions and processes with the participation of 13 species including electronically excited particles. The nonlocal transport of electrons was accounted for into the fluid model. The dependence of the ion mobility with the electric field was also considered. Basic discharge properties were described. It has been found that a large part (* 80%) of the total electric power (1700 mW) delivered in the bulk of the sheath region is spent in heating the positive ions and further dissipated through collisions with the neutral particles. The results also showed that the electron energy loss in inelastic collisions represents only * 25% of the electron power and that about 63% of the power spent on gas heating is produced by the ion– molecule reaction, the electron–ion and ion–ion recombination reactions, and by the electron attachment. The rest of the power converted into heat is contributed by dissociation by electron-impact, dissociative ionization and quenching of O(1 D). Some fast gas heating channels which are expected to play a key role in the double-arcing phenomena in oxygen gas were also identified.
publishDate 2017
dc.date.none.fl_str_mv 2017
2024-02-16T00:46:36Z
2024-02-16T00:46:36Z
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv Plasma Chem Plasma Process.
http://hdl.handle.net/20.500.12272/9502
10.1007/s11090-017-9859-x
identifier_str_mv Plasma Chem Plasma Process.
10.1007/s11090-017-9859-x
url http://hdl.handle.net/20.500.12272/9502
dc.language.none.fl_str_mv eng
eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
2024-02-16T00:46:36Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Mancinelli, Beatriz.
Creative Commons http://creativecommons.org/licenses/by-nc-nd/4.0/ Attribution-NonCommercial-NoDerivatives 4.0 Internacional Este trabajo puede ser utilizado con fines académicos y de estudio.
eu_rights_str_mv openAccess
rights_invalid_str_mv 2024-02-16T00:46:36Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Mancinelli, Beatriz.
Creative Commons http://creativecommons.org/licenses/by-nc-nd/4.0/ Attribution-NonCommercial-NoDerivatives 4.0 Internacional Este trabajo puede ser utilizado con fines académicos y de estudio.
dc.format.none.fl_str_mv pdf
application/pdf
dc.source.none.fl_str_mv reponame:Repositorio Institucional Abierto (UTN)
instname:Universidad Tecnológica Nacional
reponame_str Repositorio Institucional Abierto (UTN)
collection Repositorio Institucional Abierto (UTN)
instname_str Universidad Tecnológica Nacional
repository.name.fl_str_mv Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacional
repository.mail.fl_str_mv gestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.ar
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score 13.265058

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