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dc.contributor.author
Pietarila Graham, J.
dc.contributor.author
Mininni, Pablo Daniel
dc.contributor.author
Pouquet, A.
dc.date.available
2018-08-27T14:14:49Z
dc.date.issued
2011-07
dc.identifier.citation
Pietarila Graham, J.; Mininni, Pablo Daniel; Pouquet, A.; High Reynolds number magnetohydrodynamic turbulence using a Lagrangian model; American Physical Society; Physical Review E: Statistical, Nonlinear and Soft Matter Physics; 84; 1; 7-2011; 163141-163149
dc.identifier.issn
1539-3755
dc.identifier.uri
http://hdl.handle.net/11336/57151
dc.description.abstract
With the help of a model of magnetohydrodynamic (MHD) turbulence tested previously, we explore high Reynolds number regimes up to equivalent resolutions of 60003 grid points in the absence of forcing and with no imposed uniform magnetic field. For the given initial condition chosen here, with equal kinetic and magnetic energy, the flow ends up being dominated by the magnetic field, and the dynamics leads to an isotropic Iroshnikov-Kraichnan energy spectrum. However, the locally anisotropic magnetic field fluctuations perpendicular to the local mean field follow a Kolmogorov law. We find that the ratio of the eddy turnover time to the Alfvén time increases with wave number, contrary to the so-called critical balance hypothesis. Residual energy and helicity spectra are also considered; the role played by the conservation of magnetic helicity is studied, and scaling laws are found for the magnetic helicity and residual helicity spectra. We put these results in the context of the dynamics of a globally isotropic MHD flow that is locally anisotropic because of the influence of the strong large-scale magnetic field, leading to a partial equilibration between kinetic and magnetic modes for the energy and the helicity. © 2011 American Physical Society.
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application/pdf
dc.language.iso
eng
dc.publisher
American Physical Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Subgrid Models
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Conducting Flows
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Regularized Equations
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Turbulence
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
High Reynolds number magnetohydrodynamic turbulence using a Lagrangian model
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-08-24T13:44:09Z
dc.journal.volume
84
dc.journal.number
1
dc.journal.pagination
163141-163149
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Nueva York
dc.description.fil
Fil: Pietarila Graham, J.. University Johns Hopkins; Estados Unidos
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: Pouquet, A.. National Center for Atmospheric Research; Estados Unidos
dc.journal.title
Physical Review E: Statistical, Nonlinear and Soft Matter Physics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://pre.aps.org/abstract/PRE/v84/i1/e016314
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevE.84.016314
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