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dc.contributor.author
Mancinelli, Beatriz Rosa  
dc.contributor.author
Prevosto, Leandro  
dc.contributor.author
Chamorro Garcés, Juan Camilo  
dc.contributor.author
Minotti, Fernando Oscar  
dc.contributor.author
Kelly, Hector Juan  
dc.date.available
2019-01-11T17:17:41Z  
dc.date.issued
2018-01  
dc.identifier.citation
Mancinelli, Beatriz Rosa; Prevosto, Leandro; Chamorro Garcés, Juan Camilo; Minotti, Fernando Oscar; Kelly, Hector Juan; Modelling of the Plasma–Sheath Boundary Region in Wall-Stabilized Arc Plasmas: Unipolar Discharge Properties; Springer; Plasma Chemistry And Plasma Processing; 38; 1; 1-2018; 147-176  
dc.identifier.issn
0272-4324  
dc.identifier.uri
http://hdl.handle.net/11336/67929  
dc.description.abstract
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(1D). Some fast gas heating channels which are expected to play a key role in the double-arcing phenomena in oxygen gas were also identified.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Springer  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Plasma&Ndash;Sheath  
dc.subject
Unipolar Discharge  
dc.subject
Wall-Stabilized Arc  
dc.subject.classification
Astronomía  
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Ciencias Físicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Modelling of the Plasma–Sheath Boundary Region in Wall-Stabilized Arc Plasmas: Unipolar Discharge Properties  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2019-01-04T21:37:34Z  
dc.journal.volume
38  
dc.journal.number
1  
dc.journal.pagination
147-176  
dc.journal.pais
Estados Unidos  
dc.journal.ciudad
Nueva York  
dc.description.fil
Fil: Mancinelli, Beatriz Rosa. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto; Argentina  
dc.description.fil
Fil: Prevosto, Leandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Tecnológica Nacional. Facultad Reg.venado Tuerto. Departamento de Ing.electromecanica; Argentina  
dc.description.fil
Fil: Chamorro Garcés, Juan Camilo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto; Argentina  
dc.description.fil
Fil: Minotti, Fernando Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física del Plasma. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física del Plasma; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina  
dc.description.fil
Fil: Kelly, Hector Juan. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina  
dc.journal.title
Plasma Chemistry And Plasma Processing  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s11090-017-9859-x  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s11090-017-9859-x