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Global stability analysis of azimuthal oscillations in Hall thrusters

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dc.affiliation.dptoUC3M. Departamento de Ingeniería Aeroespaciales
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Equipo de Propulsión Espacial y Plasmas (EP2)es
dc.contributor.authorEscobar Antón, Diego
dc.contributor.authorAhedo Galilea, Eduardo Antonio
dc.date.accessioned2019-11-07T13:33:01Z
dc.date.available2019-11-07T13:33:01Z
dc.date.issued2014-11-20
dc.descriptionProceeding of: 33rd International Electric Propulsion Conference (IEPC 2013)en
dc.description.abstractA linearized time-dependent 2-D (axial and azimuthal) fluid model of the Hall thruster discharge is presented. This model is used to carry out a global stability analysis of the plasma response, as opposed to the more common local stability analyses. Experimental results indicate the existence of low-frequency long-wave-length azimuthal oscillations in the direction of the E × B drift, usually referred to as spokes. The present model predicts the presence of such oscillations for typical Hall thruster conditions with a frequency and a growth rate similar to those found in experiments. Moreover, the comparison between the simulated spoke and the simulated breathing mode, a purely axial low-frequency oscillation typical in Hall thrusters, shows similar features in them. Additionally, the contribution of this azimuthal oscillation to electron conductivity is evaluated tentatively by computing the equivalent anomalous diffusion coefficient from the linear oscillations. The results show a possible contribution to anomalous diffusion in the rear part of the thruster.en
dc.description.sponsorshipThis work was supported in part by Spain's Research and Development National Plan under Project AYA-2010-61699 and in part by the Air Force Office of Scientific Research, Air Force Material Command, U.S. Air Force, under Grant FA8655-13-1-3033.en
dc.format.extent9es
dc.identifier.bibliographicCitationIEEE Transactions on Plasma Science (Special issue IEPC 2013), 43(1), Nov. 2014, Pp. 149-157en
dc.identifier.doihttps://doi.org/10.1109/TPS.2014.2367913
dc.identifier.isbn0093-3813
dc.identifier.publicationfirstpage149es
dc.identifier.publicationissue1es
dc.identifier.publicationlastpage157es
dc.identifier.publicationtitleIEEE Transactions on Plasma Science (Special issue IEPC 2013)en
dc.identifier.publicationvolume43es
dc.identifier.urihttps://hdl.handle.net/10016/29147
dc.identifier.uxxiCC/0000021863
dc.language.isoenges
dc.publisherIEEEes
dc.relation.eventdate2013-10-06es
dc.relation.eventplaceWashington D.C., USAen
dc.relation.eventtitle33rd International Electric Propulsion Conference (IEPC 2013), 6-10 October 2013, Washington D.C., USAen
dc.relation.projectIDGobierno de España. AYA-2010-61699es
dc.rights© 2014 IEEE.en
dc.rights.accessRightsopen accessen
dc.subject.ecienciaAeronáuticaes
dc.subject.ecienciaFísicaes
dc.subject.otherPlasma propulsionen
dc.subject.otherPlasma simulationen
dc.subject.otherPlasma stabilityen
dc.subject.otherPlasma transport processesen
dc.titleGlobal stability analysis of azimuthal oscillations in Hall thrustersen
dc.typeconference paper*
dc.type.hasVersionAM*
dspace.entity.typePublication
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