Hydrodynamic Model for the Plasma-Gas Flow in a Cutting Torch Nozzle.

Autores
Kelly, Héctor; Minotti, Fernando; Prevosto, Leandro; Mancinelli, Beatriz
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión aceptada
Descripción
We present a simple hydrodynamic model to obtain the profiles of the relevant physical quantities along a nozzle of arbitrary cross-section in a cutting torch. The model uses a two-zone approximation (a hot central plasma carrying the discharge current wrapped by a relatively cold gas which thermally isolates the nozzle wall from the plasma). Seeking for a solution with sonic conditions at the nozzle exit, the model allows expressing all the profiles in terms of the externally controlled parameters of the torch (geometry of the torch, discharge current, mass flow of the gas and plenum pressure) and the values of the arc and gas temperatures at the nozzle entrance. These last two values can be estimated simply appealing to energy conservation in the cathode-nozzle region. The model contains additional features compared with previous reported models, while retaining simplicity. The detailed consideration of an arc region coupled to the surrounding gas dynamics allows determining voltage drops and consequent delivered power with less assumptions than those found in other published works, and at the same time reduces the set of parameters needed to determine the solution.
Fil: Kelly, Héctor. Facultad de Ciencias Exactas y Naturales (UBA). Departamento de Física. Instituto de Física ( CONICET). Buenos Aires; Argentina.
Fil: Minotti, Fernando. Instituto de Física del Plasma. Departamento de Física. Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires; Argentina.
Fil: Prevosto, Leandro. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Departamento Ingeniería Electromecánica. Grupo de Descargas Eléctricas. Santa Fe; Argentina.
Fil: Mancinelli, Beatriz. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Departamento Ingeniería Electromecánica. Grupo de Descargas Eléctricas. Santa Fe; Argentina.
Peer Reviewed
Materia
Hydrodynamic Model.
Cutting Torch.
Plasma-Gas Flow.
Nivel de accesibilidad
acceso abierto
Condiciones de uso
2024-02-15T00:53:05Z
Repositorio
Repositorio Institucional Abierto (UTN)
Institución
Universidad Tecnológica Nacional
OAI Identificador
oai:ria.utn.edu.ar:20.500.12272/9486
Acceder
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network_acronym_str RIAUTN
repository_id_str a
network_name_str Repositorio Institucional Abierto (UTN)
spelling Hydrodynamic Model for the Plasma-Gas Flow in a Cutting Torch Nozzle.Kelly, HéctorMinotti, FernandoPrevosto, LeandroMancinelli, BeatrizHydrodynamic Model.Cutting Torch.Plasma-Gas Flow.We present a simple hydrodynamic model to obtain the profiles of the relevant physical quantities along a nozzle of arbitrary cross-section in a cutting torch. The model uses a two-zone approximation (a hot central plasma carrying the discharge current wrapped by a relatively cold gas which thermally isolates the nozzle wall from the plasma). Seeking for a solution with sonic conditions at the nozzle exit, the model allows expressing all the profiles in terms of the externally controlled parameters of the torch (geometry of the torch, discharge current, mass flow of the gas and plenum pressure) and the values of the arc and gas temperatures at the nozzle entrance. These last two values can be estimated simply appealing to energy conservation in the cathode-nozzle region. The model contains additional features compared with previous reported models, while retaining simplicity. The detailed consideration of an arc region coupled to the surrounding gas dynamics allows determining voltage drops and consequent delivered power with less assumptions than those found in other published works, and at the same time reduces the set of parameters needed to determine the solution.Fil: Kelly, Héctor. Facultad de Ciencias Exactas y Naturales (UBA). Departamento de Física. Instituto de Física ( CONICET). Buenos Aires; Argentina.Fil: Minotti, Fernando. Instituto de Física del Plasma. Departamento de Física. Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires; Argentina.Fil: Prevosto, Leandro. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Departamento Ingeniería Electromecánica. Grupo de Descargas Eléctricas. Santa Fe; Argentina.Fil: Mancinelli, Beatriz. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Departamento Ingeniería Electromecánica. Grupo de Descargas Eléctricas. Santa Fe; Argentina.Peer Reviewed2024-02-15T00:53:05Z2024-02-15T00:53:05Z2004info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articulopdfapplication/pdfBrazilian Journal of Physics.www.scielo.br/j/bjp/a/vhqfSTW5R4HKxxX3xngtHxk/?format=pdf&lang=enhttp://hdl.handle.net/20.500.12272/9486engBrazilian Journal of Physics, vol. 34, no. 4B, December, 2004.info:eu-repo/semantics/openAccess2024-02-15T00:53:05Zhttp://creativecommons.org/licenses/by-nc-nd/4.0/Attribution-NonCommercial-NoDerivatives 4.0 InternacionalKelly, Héctor.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 Nacional2026-09-24T12:44:56Zoai:ria.utn.edu.ar:20.500.12272/9486instacron: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 12:44:57.233Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacionalfalse
dc.title.none.fl_str_mv Hydrodynamic Model for the Plasma-Gas Flow in a Cutting Torch Nozzle.
title Hydrodynamic Model for the Plasma-Gas Flow in a Cutting Torch Nozzle.
spellingShingle Hydrodynamic Model for the Plasma-Gas Flow in a Cutting Torch Nozzle.
Kelly, Héctor
Hydrodynamic Model.
Cutting Torch.
Plasma-Gas Flow.
title_short Hydrodynamic Model for the Plasma-Gas Flow in a Cutting Torch Nozzle.
title_full Hydrodynamic Model for the Plasma-Gas Flow in a Cutting Torch Nozzle.
title_fullStr Hydrodynamic Model for the Plasma-Gas Flow in a Cutting Torch Nozzle.
title_full_unstemmed Hydrodynamic Model for the Plasma-Gas Flow in a Cutting Torch Nozzle.
title_sort Hydrodynamic Model for the Plasma-Gas Flow in a Cutting Torch Nozzle.
dc.creator.none.fl_str_mv Kelly, Héctor
Minotti, Fernando
Prevosto, Leandro
Mancinelli, Beatriz
author Kelly, Héctor
author_facet Kelly, Héctor
Minotti, Fernando
Prevosto, Leandro
Mancinelli, Beatriz
author_role author
author2 Minotti, Fernando
Prevosto, Leandro
Mancinelli, Beatriz
author2_role author
author
author
dc.subject.none.fl_str_mv Hydrodynamic Model.
Cutting Torch.
Plasma-Gas Flow.
topic Hydrodynamic Model.
Cutting Torch.
Plasma-Gas Flow.
dc.description.none.fl_txt_mv We present a simple hydrodynamic model to obtain the profiles of the relevant physical quantities along a nozzle of arbitrary cross-section in a cutting torch. The model uses a two-zone approximation (a hot central plasma carrying the discharge current wrapped by a relatively cold gas which thermally isolates the nozzle wall from the plasma). Seeking for a solution with sonic conditions at the nozzle exit, the model allows expressing all the profiles in terms of the externally controlled parameters of the torch (geometry of the torch, discharge current, mass flow of the gas and plenum pressure) and the values of the arc and gas temperatures at the nozzle entrance. These last two values can be estimated simply appealing to energy conservation in the cathode-nozzle region. The model contains additional features compared with previous reported models, while retaining simplicity. The detailed consideration of an arc region coupled to the surrounding gas dynamics allows determining voltage drops and consequent delivered power with less assumptions than those found in other published works, and at the same time reduces the set of parameters needed to determine the solution.
Fil: Kelly, Héctor. Facultad de Ciencias Exactas y Naturales (UBA). Departamento de Física. Instituto de Física ( CONICET). Buenos Aires; Argentina.
Fil: Minotti, Fernando. Instituto de Física del Plasma. Departamento de Física. Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires; Argentina.
Fil: Prevosto, Leandro. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Departamento Ingeniería Electromecánica. Grupo de Descargas Eléctricas. Santa Fe; Argentina.
Fil: Mancinelli, Beatriz. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Departamento Ingeniería Electromecánica. Grupo de Descargas Eléctricas. Santa Fe; Argentina.
Peer Reviewed
description We present a simple hydrodynamic model to obtain the profiles of the relevant physical quantities along a nozzle of arbitrary cross-section in a cutting torch. The model uses a two-zone approximation (a hot central plasma carrying the discharge current wrapped by a relatively cold gas which thermally isolates the nozzle wall from the plasma). Seeking for a solution with sonic conditions at the nozzle exit, the model allows expressing all the profiles in terms of the externally controlled parameters of the torch (geometry of the torch, discharge current, mass flow of the gas and plenum pressure) and the values of the arc and gas temperatures at the nozzle entrance. These last two values can be estimated simply appealing to energy conservation in the cathode-nozzle region. The model contains additional features compared with previous reported models, while retaining simplicity. The detailed consideration of an arc region coupled to the surrounding gas dynamics allows determining voltage drops and consequent delivered power with less assumptions than those found in other published works, and at the same time reduces the set of parameters needed to determine the solution.
publishDate 2004
dc.date.none.fl_str_mv 2004
2024-02-15T00:53:05Z
2024-02-15T00:53:05Z
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 Brazilian Journal of Physics.
www.scielo.br/j/bjp/a/vhqfSTW5R4HKxxX3xngtHxk/?format=pdf&lang=en
http://hdl.handle.net/20.500.12272/9486
identifier_str_mv Brazilian Journal of Physics.
www.scielo.br/j/bjp/a/vhqfSTW5R4HKxxX3xngtHxk/?format=pdf&lang=en
url http://hdl.handle.net/20.500.12272/9486
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Brazilian Journal of Physics, vol. 34, no. 4B, December, 2004.
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
2024-02-15T00:53:05Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Kelly, Héctor.
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 2024-02-15T00:53:05Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Kelly, Héctor.
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 13.24418

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