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dc.contributor.author
Mininni, Pablo Daniel  
dc.contributor.author
Pouquet, A.  
dc.date.available
2019-01-09T17:10:06Z  
dc.date.issued
2007-12  
dc.identifier.citation
Mininni, Pablo Daniel; Pouquet, A.; Energy spectra stemming from interactions of Alfvén waves and turbulent eddies; American Physical Society; Physical Review Letters; 99; 25; 12-2007; 2545021-2545024  
dc.identifier.issn
0031-9007  
dc.identifier.uri
http://hdl.handle.net/11336/67757  
dc.description.abstract
We present a numerical analysis of an incompressible decaying magnetohydrodynamic turbulence run on a grid of 15363 points. The Taylor Reynolds number at the maximum of dissipation is 1100, and the initial condition is a superposition of large-scale Arn'old-Beltrami-Childress flows and random noise at small scales, with no uniform magnetic field. The initial kinetic and magnetic energies are equal, with negligible correlation. The resulting energy spectrum is a combination of two components, each moderately resolved. Isotropy obtains in the large scales, with a spectral law compatible with the Iroshnikov-Kraichnan theory stemming from the weakening of nonlinear interactions due to Alfvén waves; scaling of structure functions confirms the non-Kolmogorovian nature of the flow in this range. At small scales, weak turbulence emerges with a k-2 spectrum, the perpendicular direction referring to the local quasiuniform magnetic field. © 2007 The American Physical Society.  
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.classification
Astronomía  
dc.subject.classification
Ciencias Físicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Energy spectra stemming from interactions of Alfvén waves and turbulent eddies  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2019-01-09T14:23:28Z  
dc.journal.volume
99  
dc.journal.number
25  
dc.journal.pagination
2545021-2545024  
dc.journal.pais
Estados Unidos  
dc.journal.ciudad
Nueva York  
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 Letters  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevLett.99.254502