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dc.contributor.author
Andrés, Nahuel
dc.contributor.author
Sahraoui, F.
dc.date.available
2019-06-13T14:31:48Z
dc.date.issued
2017-11
dc.identifier.citation
Andrés, Nahuel; Sahraoui, F.; Alternative derivation of exact law for compressible and isothermal magnetohydrodynamics turbulence; American Physical Society; Physical Review E; 96; 5; 11-2017; 1-8
dc.identifier.issn
2470-0053
dc.identifier.uri
http://hdl.handle.net/11336/78178
dc.description.abstract
The exact law for fully developed homogeneous compressible magnetohydrodynamics (CMHD) turbulence is derived. For an isothermal plasma, without the assumption of isotropy, the exact law is expressed as a function of the plasma velocity field, the compressible Alfvén velocity, and the scalar density, instead of the Elsasser variables used in previous works. The theoretical results show four different types of terms that are involved in the nonlinear cascade of the total energy in the inertial range. Each category is examined in detail, in particular, those that can be written either as source or flux terms. Finally, the role of the background magnetic field B0 is highlighted and a comparison with the incompressible MHD (IMHD) model is discussed. This point is particularly important when testing this exact law on numerical simulations and in situ observations in space plasmas.
dc.format
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
Turbulence
dc.subject.classification
Astronomía
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Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Alternative derivation of exact law for compressible and isothermal magnetohydrodynamics turbulence
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-06-04T20:19:01Z
dc.journal.volume
96
dc.journal.number
5
dc.journal.pagination
1-8
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Nueva York
dc.description.fil
Fil: Andrés, Nahuel. Ecole Polytechnique; Francia. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
dc.description.fil
Fil: Sahraoui, F.. Ecole Polytechnique; Francia
dc.journal.title
Physical Review E
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevE.96.053205
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