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Detailed numerical simulation of cathode spots in high-current vacuum arcs

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dc.contributor.authorKaufmann, H. T. C.
dc.contributor.authorCunha, M. D.
dc.contributor.authorBenilov, M. S.
dc.contributor.authorHartmann, W.
dc.contributor.authorWenzel, N.
dc.date.accessioned2022-09-05T11:13:07Z
dc.date.available2022-09-05T11:13:07Z
dc.date.issued2016
dc.description.abstractA detailed numerical model of cathode spots in high-current vacuum arcs is given. The model provides a complete description of all phases of life of an individual spot taking into account the presence of metal vapor left over from a previous explosion, the interaction of the vaporized plasma from the cathode spot with the cathode surface, and Joule heat generation in the cathode body. Melting and motion of molten metal due to Lorentz force are also accounted for, together with surface tension effects and the pressure exerted by the plasma over the cathode surface. First results are presented and analyzed for copper cathodes with a protrusion and planar cathodes. Emphasis is given to the investigation of the effect of the vaporized plasma and of hydrodynamic processes. No thermal runaway is observed.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationKaufmann, H. T. C., Cunha, M. D., Benilov, M. S., Hartmann, W., & Wenzel, N. (2016, September). Detailed numerical simulation of cathode spots in high-current vacuum arcs. In 2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) (Vol. 2, pp. 1-4). IEEE. DOI: 10.1109/DEIV.2016.7763938pt_PT
dc.identifier.doi10.1109/DEIV.2016.7763938pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/4561
dc.language.isoengpt_PT
dc.publisherIEEEpt_PT
dc.relationInstitute for Plasmas and Nuclear Fusion
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectHigh-current vacuum arcspt_PT
dc.subjectCathode spotspt_PT
dc.subjectNumerical simulationpt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.titleDetailed numerical simulation of cathode spots in high-current vacuum arcspt_PT
dc.typeconference object
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.endPage4pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.title2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)pt_PT
oaire.citation.volume2pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameda Costa Kaufmann
person.familyNameCunha
person.familyNameBenilov
person.givenNameHelena Teresa
person.givenNameMário
person.givenNameMikhail
person.identifierF-9313-2019
person.identifier.ciencia-idC81B-A663-3AA1
person.identifier.ciencia-id0F14-A79A-97C1
person.identifier.orcid0000-0001-6740-2467
person.identifier.orcid0000-0002-0397-536X
person.identifier.orcid0000-0001-9059-1948
person.identifier.ridK-4443-2015
person.identifier.scopus-author-id57194384877
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.typeconferenceObjectpt_PT
relation.isAuthorOfPublicationc925c328-4ea8-4602-895e-a409ad12f24c
relation.isAuthorOfPublication8509472b-5d78-47db-bfa0-51625a4e9218
relation.isAuthorOfPublication5ccf95a3-53d5-446c-857c-55d64b887175
relation.isAuthorOfPublication.latestForDiscovery5ccf95a3-53d5-446c-857c-55d64b887175
relation.isProjectOfPublication773f8550-0778-4bd3-b859-600f4fca9629
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