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Numerical investigation of the stability of stationary solutions in the theory of cathode spots in arcs in vacuum and ambient gas

2014Journal article Open access
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dc.contributor.authorBenilov, M. S.
dc.contributor.authorCunha, M. D.
dc.contributor.authorHartmann, W.
dc.contributor.authorWenzel, N.
dc.date.accessioned2022-09-02T11:12:13Z
dc.date.available2022-09-02T11:12:13Z
dc.date.issued2014
dc.description.abstractThe stability of stationary spots on cathodes of arcs in vacuum and ambient gas is investigated by means of the simulation of the temporal evolution of perturbations imposed over steady-state solutions. Two cases of loading conditions are considered, namely, spots operating at a fixed current (the case typical of small-scale experiments) and spots operating at a fixed voltage (the case typical of high-power circuit breakers). Results are reported on spots on large copper cathodes of vacuum arcs and on spots on tungsten cathodes of high-pressure argon arcs. It is shown, in particular, that if the ballast resistance in small-scale laboratory experiments with a high-current arc is insufficient, the potential consequence may be a thermal explosion of a spot, if the arc burns in vacuum, and massive melting of the cathode surface, if the arc burns in ambient gas. This conclusion conforms to trends observed in the experiment.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBenilov, M. S., Cunha, M. D., Hartmann, W., & Wenzel, N. (2014). Numerical investigation of the stability of stationary solutions in the theory of cathode spots in arcs in vacuum and ambient gas. Plasma Sources Science and Technology, 23(5), 054007.pt_PT
dc.identifier.doi10.1088/0963-0252/23/5/054007pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/4553
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherIOP Publishingpt_PT
dc.relationModelling, understanding, and controlling self-organization phenomena in plasma-electrode interaction in gas discharges: from first principles to applications
dc.relation2014 - Strategic Project
dc.relation.publisherversionhttps://iopscience.iop.org/article/10.1088/0963-0252/23/5/054007/metapt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectStabilitypt_PT
dc.subjectCathode spotspt_PT
dc.subjectStationary solutionspt_PT
dc.subjectArcs in vacuum and ambient gaspt_PT
dc.subject.pt_PT
dc.subjectFaculdade de ciências Exatas e da Engenhariapt_PT
dc.titleNumerical investigation of the stability of stationary solutions in the theory of cathode spots in arcs in vacuum and ambient gaspt_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.awardTitle2014 - Strategic Project
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%2F2014/PT
oaire.citation.issue5pt_PT
oaire.citation.startPage054007pt_PT
oaire.citation.titlePlasma Sources Science and Technologypt_PT
oaire.citation.volume23pt_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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