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Three-dimensional neutralizer effects on a Hall-effect thruster near plume

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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.authorCichocki, Filippo
dc.contributor.authorDomínguez Vázquez, Adrián
dc.contributor.authorMerino Martínez, Mario
dc.contributor.authorFajardo Peña, Pablo
dc.contributor.authorAhedo Galilea, Eduardo Antonio
dc.contributor.funderEuropean Commissionen
dc.contributor.funderMinisterio de Ciencia, Innovación y Universidades (España)es
dc.date.accessioned2021-11-08T11:44:06Z
dc.date.available2023-10-01T23:00:05Z
dc.date.issued2021-10
dc.description.abstractThe near plume of an SPT100-like Hall thruster is simulated with a hybrid particle-in-cell/fluid code to assess the three-dimensional effects of the neutralizer for two different asymmetric positions. The electron fluid model accounts for the effects of both magnetization and collisions, and closes the momentum equation with a simple polytropic closure for the electron temperature. The observed asymmetries are small in the majority of the plasma plume properties and in the achieved magnetic thrust and torque, which also show consistent trends with the available experimental characterizations. The only exception is represented by the 3D electric and electron current densities, which show persistent asymmetries that tend to diminish as the neutralizer is placed both farther downstream and radially outward, outside of the magnetic separatrix. These findings permit to justify the use of axisymmetric codes for Hall-effect thruster performance estimation. The results on the neutralizer asymmetry effects are found robust to different polytropic coefficients (i.e. electron temperature gradients). Finally, the comparison of the adopted polytropic closure model against an advanced one including the energy balance equation shows relevant differences in the electron temperature but still a good agreement in the electron current density map.en
dc.description.sponsorshipThis work has been supported by the ESPEOS project, funded by the Agencia Estatal de Investigación (Spanish National Research Agency), under Grant number PID2019-108034RB-I00/AEI/10.13039/501100011033. Additional support has been received from the ASPIRE project, funded by the European Union's Horizon 2020 Research and Innovation Program , under Grant Agreement number 101004366.en
dc.format.extent13
dc.identifier.bibliographicCitationCichocki, F., Domínguez-Vázquez, A., Merino, M., Fajardo, P. & Ahedo, E. (2021). Three-dimensional neutralizer effects on a Hall-effect thruster near plume. Acta Astronautica, 187, pp. 498–510.en
dc.identifier.doihttps://doi.org/10.1016/j.actaastro.2021.06.042
dc.identifier.issn0094-5765
dc.identifier.publicationfirstpage498
dc.identifier.publicationlastpage510
dc.identifier.publicationtitleActa Astronauticaes
dc.identifier.publicationvolume187
dc.identifier.urihttps://hdl.handle.net/10016/33549
dc.identifier.uxxiAR/0000028579
dc.language.isoeng
dc.publisherElsevieren
dc.relation.projectIDGobierno de España. PID2019-108034RB-I00es
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/101004366
dc.rights© 2021 IAA. Published by Elsevier Ltd. All rights reserved.en
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.ecienciaBiología y Biomedicinaes
dc.subject.otherNeutralizeren
dc.subject.otherCathodeen
dc.subject.otherMagnetized plasma plumeen
dc.subject.otherThree-dimensional asymmetry effectsen
dc.subject.otherEP2PLUSen
dc.titleThree-dimensional neutralizer effects on a Hall-effect thruster near plumeen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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