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Space-resolved modeling of stationary spots on copper vacuum arc cathodes and on composite CuCr cathodes with large grains

2013Journal article Open access
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dc.contributor.authorBenilov, Mikhail S.
dc.contributor.authorCunha, Mário D.
dc.contributor.authorHartmann, Werner
dc.contributor.authorKosse, Sylvio
dc.contributor.authorLawall, Andreas
dc.contributor.authorWenzel, Norbert
dc.date.accessioned2022-09-01T10:33:36Z
dc.date.available2022-09-01T10:33:36Z
dc.date.issued2013
dc.description.abstractA self-consistent space-resolved numerical model of cathode spots in vacuum arcs is realized on the computational platform COMSOL Multiphysics. The model is applied to the investigation of stationary spots on planar cathodes made of copper or composite CuCr material with large ( 20 µm) chromium grains. The modeling results reveal a well defined spot with a structure, which is in agreement with the general theory of stationary cathode arc spots and similar to that of spots on cathodes of arcs in ambient gas. In the case of CuCr contacts with large chromium grains, spots with currents of the order of tens of amperes on copper coexist with spots on chromium with currents of the order of one or few amperes. The main effect of change of the cathode material from copper to chromium is a reduction of thermal conductivity of the cathode material, which causes a reduction of the radius of the spot and a corresponding reduction of the spot current.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBenilov, M. S., Cunha, M. D., Hartmann, W., Kosse, S., Lawall, A., & Wenzel, N. (2013). Space-resolved modeling of stationary spots on copper vacuum arc cathodes and on composite CuCr cathodes with large grains. IEEE Transactions on Plasma Science, 41(8), 1950-1958. DOI: 10.1109/TPS.2013.2263255pt_PT
dc.identifier.doi10.1109/TPS.2013.2263255pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/4544
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherInstitute of Electrical and Electronics Engineerspt_PT
dc.relationModelling, understanding, and controlling self-organization phenomena in plasma-electrode interaction in gas discharges: from first principles to applications
dc.relationStrategic Project - UI 219 - 2011-2012
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectCathode spotspt_PT
dc.subjectCircuit breakerspt_PT
dc.subjectComposite cathodespt_PT
dc.subjectVacuum arcspt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.titleSpace-resolved modeling of stationary spots on copper vacuum arc cathodes and on composite CuCr cathodes with large grainspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleModelling, understanding, and controlling self-organization phenomena in plasma-electrode interaction in gas discharges: from first principles to applications
oaire.awardTitleStrategic Project - UI 219 - 2011-2012
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FFIS-PLA%2F2708%2F2012/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/PEst-OE%2FMAT%2FUI0219%2F2011/PT
oaire.citation.endPage1958pt_PT
oaire.citation.issue8pt_PT
oaire.citation.startPage1950pt_PT
oaire.citation.titleIEEE Transactions on Plasma Sciencept_PT
oaire.citation.volume41pt_PT
oaire.fundingStream3599-PPCDT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameBenilov
person.familyNameCunha
person.givenNameMikhail
person.givenNameMário
person.identifier.ciencia-id0F14-A79A-97C1
person.identifier.orcid0000-0001-9059-1948
person.identifier.orcid0000-0002-0397-536X
person.identifier.ridK-4443-2015
person.identifier.scopus-author-id7005138676
person.identifier.scopus-author-id7102711276
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication8509472b-5d78-47db-bfa0-51625a4e9218
relation.isAuthorOfPublication.latestForDiscovery5ccf95a3-53d5-446c-857c-55d64b887175
relation.isProjectOfPublicationac2557f2-e637-477a-8a14-7b1f23978256
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