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dc.contributor.author
Mininni, Pablo Daniel
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dc.contributor.author
Alexakis, Alexandros
dc.contributor.author
Pouquet, Annick
dc.date.available
2019-01-09T17:12:05Z
dc.date.issued
2007-12
dc.identifier.citation
Mininni, Pablo Daniel; Alexakis, Alexandros; Pouquet, Annick; Energy transfer in Hall-MHD turbulence: Cascades, backscatter, and dynamo action; Cambridge University Press; Journal Of Plasma Physics; 73; 3; 12-2007; 377-401
dc.identifier.issn
0022-3778
dc.identifier.uri
http://hdl.handle.net/11336/67758
dc.description.abstract
Scale interactions in Hall magnetohydrodynamics (MHDs) are studied using both the mean field theory derivation of transport coefficients, and direct numerical simulations in three space dimensions. In the magnetically dominated regime, the eddy resistivity is found to be negative definite, leading to large-scale instabilities. A direct cascade of the total energy is observed, although as the amplitude of the Hall effect is increased, backscatter of magnetic energy to large scales is found, a feature not present in MHD flows. The coupling between the magnetic and velocity fields is different than in the MHD case, and backscatter of energy from small-scale magnetic fields to large-scale flows is also observed. For the magnetic helicity, a strong quenching of its transfer is found. We also discuss non-helical magnetically forced Hall-MHD simulations where growth of a large-scale magnetic field is observed.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Cambridge University Press
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject.classification
Astronomía
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Energy transfer in Hall-MHD turbulence: Cascades, backscatter, and dynamo action
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-01-09T14:23:48Z
dc.journal.volume
73
dc.journal.number
3
dc.journal.pagination
377-401
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Cambridge
dc.description.fil
Fil: Mininni, Pablo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
dc.description.fil
Fil: Alexakis, Alexandros. National Center for Atmospheric Research; Estados Unidos
dc.description.fil
Fil: Pouquet, Annick. National Center for Atmospheric Research; Estados Unidos
dc.journal.title
Journal Of Plasma Physics
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1017/S0022377806004624
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