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Account of diffusion in local thermodynamic equilibrium and two-temperature plasma models

2019Journal article Open access
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dc.contributor.authorSantos, D. F. N.
dc.contributor.authorLisnyak, M
dc.contributor.authorBenilov, M. S.
dc.date.accessioned2022-09-06T13:50:59Z
dc.date.available2022-09-06T13:50:59Z
dc.date.issued2019
dc.description.abstractA self-consistent account of the effect of diffusion on charge transport in local thermodynamic equilibrium (LTE) and two-temperature (2T) ionization-equilibrium plasmas amounts to introducing into Ohm’s law, in addition to the conventional term proportional to the electric field (conduction current) and thermal-diffusion terms, also terms describing the diffusion due to plasma composition variations, which are proportional to the temperature gradient (or, in the case of 2T plasmas, to ∇Te and ∇Th) and to the plasma pressure gradient. These terms are calculated, with the use of the Stefan–Maxwell equations, for the particular case of 2T ionization-equilibrium atomic plasmas with singly charged ions. Also proposed is a simple way of approximate evaluation of reactive thermal conductivity in such plasmas. An online tool performing evaluation of the relevant coefficients for 2T argon, xenon, and mercury plasmas has been deployed on the internet. Representative modelling results show that the new form of Ohm’s law, when introduced into standard LTE or 2T models, may describe the electric field reversal in front of arc anodes, an effect that has been simulated previously only by means of (more complex) models taking into account deviations from ionization equilibrium.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSantos, D. F. N., Lisnyak, M., & Benilov, M. S. (2019). Account of diffusion in local thermodynamic equilibrium and two-temperature plasma models. Journal of Physics D: Applied Physics, 52(45), 454003. DOI: 10.1088/1361-6463/ab34c1pt_PT
dc.identifier.doi10.1088/1361-6463/ab34c1pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/4573
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/ab34c1/metapt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectReactive thermal conductivitypt_PT
dc.subjectLTE and 2T modellingpt_PT
dc.subjectDiffusion currentspt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.titleAccount of diffusion in local thermodynamic equilibrium and two-temperature plasma modelspt_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%2F2019/PT
oaire.citation.issue45pt_PT
oaire.citation.startPage454003pt_PT
oaire.citation.titleJournal of Physics D: Applied Physicspt_PT
oaire.citation.volume52pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameSantos
person.familyNameBenilov
person.givenNameDiego
person.givenNameMikhail
person.identifier.ciencia-idC81A-66AF-B0E2
person.identifier.ciencia-id0F14-A79A-97C1
person.identifier.orcid0000-0002-2377-766X
person.identifier.orcid0000-0001-9059-1948
person.identifier.ridG-1683-2019
person.identifier.ridK-4443-2015
person.identifier.scopus-author-id57192359233
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.isAuthorOfPublicationba38d863-a13a-4729-b1d5-b6fe2a79d074
relation.isAuthorOfPublication5ccf95a3-53d5-446c-857c-55d64b887175
relation.isAuthorOfPublication.latestForDiscoveryba38d863-a13a-4729-b1d5-b6fe2a79d074
relation.isProjectOfPublication1b3181b8-31b9-41ee-97dd-da48b59b5f9c
relation.isProjectOfPublication.latestForDiscovery1b3181b8-31b9-41ee-97dd-da48b59b5f9c

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