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Numerical modelling of high-pressure arc discharges: matching the LTE arc core with the electrodes

2017Journal article Open access
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dc.contributor.authorLisnyak, M.
dc.contributor.authorCunha, M. D.
dc.contributor.authorBauchire, J-M
dc.contributor.authorBenilov, M. S.
dc.date.accessioned2022-09-05T14:34:35Z
dc.date.available2022-09-05T14:34:35Z
dc.date.issued2017
dc.description.abstractA widely used approach to simulation of high-pressure arc discharges is based on the system of magneto-hydrodynamic equations written in the approximation of local thermodynamic equilibrium (LTE). In this work, boundary conditions on the surface of the electrodes are formulated with the use of equations of balance of energy in the non-equilibrium near electrode layers that separate the LTE bulk plasma and the electrodes. As an example, numerical simulations of a free-burning arc in atmospheric-pressure argon plasma in the current range from 20 to 200 A are reported. Simulation results are in reasonably good agreement with those given by more sophisticated models and with the experiment. Simulations performed for cathodes of slightly different geometries have predicted a strong effect produced by details of the cathode geometry over the distribution of the current density along the cathode surface and therefore over the plasma temperature, an interesting and potentially important result that is worth further numerical investigation and experimental verification.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationLisnyak, M., Cunha, M. D., Bauchire, J. M., & Benilov, M. S. (2017). Numerical modelling of high-pressure arc discharges: matching the LTE arc core with the electrodes. Journal of Physics D: Applied Physics, 50(31), 315203. https://doi.org/10.1088/1361-6463/aa76d3pt_PT
dc.identifier.doi10.1088/1361-6463/aa76d3pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/4564
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherIOP Publishingpt_PT
dc.relationInstitute for Plasmas and Nuclear Fusion
dc.relation.publisherversionhttps://iopscience.iop.org/article/10.1088/1361-6463/aa76d3/metapt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectHigh-pressure arcspt_PT
dc.subjectArc-electrodes interactionpt_PT
dc.subjectLTE arc core descriptionpt_PT
dc.subjectMatching conditions with electrodespt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.titleNumerical modelling of high-pressure arc discharges: matching the LTE arc core with the electrodespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleInstitute for Plasmas and Nuclear Fusion
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FFIS%2F50010%2F2013/PT
oaire.citation.issue31pt_PT
oaire.citation.startPage315203pt_PT
oaire.citation.titleJournal of Physics D: Applied Physicspt_PT
oaire.citation.volume50pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameCunha
person.familyNameBenilov
person.givenNameMário
person.givenNameMikhail
person.identifier.ciencia-id0F14-A79A-97C1
person.identifier.orcid0000-0002-0397-536X
person.identifier.orcid0000-0001-9059-1948
person.identifier.ridK-4443-2015
person.identifier.scopus-author-id7102711276
person.identifier.scopus-author-id7005138676
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication8509472b-5d78-47db-bfa0-51625a4e9218
relation.isAuthorOfPublication5ccf95a3-53d5-446c-857c-55d64b887175
relation.isAuthorOfPublication.latestForDiscovery8509472b-5d78-47db-bfa0-51625a4e9218
relation.isProjectOfPublication773f8550-0778-4bd3-b859-600f4fca9629
relation.isProjectOfPublication.latestForDiscovery773f8550-0778-4bd3-b859-600f4fca9629

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