Mostrar el registro sencillo del ítem
dc.contributor.author
Pouquet, A.
dc.contributor.author
Lee, E.
dc.contributor.author
Brachet, M. E.
dc.contributor.author
Mininni, Pablo Daniel
dc.contributor.author
Rosenberg, Duane
dc.date.available
2018-09-11T18:05:02Z
dc.date.issued
2010-04
dc.identifier.citation
Pouquet, A.; Lee, E.; Brachet, M. E.; Mininni, Pablo Daniel; Rosenberg, Duane; The dynamics of unforced turbulence at high reynolds number for taylor-green vortices generalized to mhd; Taylor & Francis Ltd; Geophysical And Astrophysical Fluid Dynamics; 104; 2-3; 4-2010; 115-134
dc.identifier.issn
0309-1929
dc.identifier.uri
http://hdl.handle.net/11336/59125
dc.description.abstract
We study decaying magnetohydrodynamics (MHD) turbulence stemming from the evolution of the Taylor-Green flow generalized recently to MHD, with equal viscosity and magnetic resistivity and up to equivalent grid resolutions of 20483 points. A pseudo-spectral code is used in which the symmetries of the velocity and magnetic fields have been implemented, allowing for sizable savings in both computer time and usage of memory at a given Reynolds number. The flow is non-helical, and at initial time the kinetic and magnetic energies are taken to be equal and concentrated in the large scales. After testing the validity of the method on grids of 5123 points, we analyze the data on the large grids up to Taylor Reynolds numbers of 2200. We find that the global temporal evolution is accelerated in MHD, compared to the corresponding neutral fluid case. We also observe an interval of time when such configurations have quasi-constant total dissipation, time during which statistical properties are determined after averaging over of the order of two turn-over times. A weak turbulence spectrum is obtained which is also given in terms of its anisotropic components. Finally, we contrast the development of small-scale eddies with two other initial conditions for the magnetic field and briefly discuss the structures that develop, and which display a complex array of current and vorticity sheets with clear rolling-up and folding. © 2010 Taylor & Francis.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Taylor & Francis Ltd
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
AlfvÉN Waves
dc.subject
Current Sheets Folding
dc.subject
Mhd
dc.subject
Symmetries
dc.subject
Turbulence
dc.subject
Universality
dc.subject.classification
Astronomía
dc.subject.classification
Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
The dynamics of unforced turbulence at high reynolds number for taylor-green vortices generalized to mhd
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-09-10T16:32:58Z
dc.journal.volume
104
dc.journal.number
2-3
dc.journal.pagination
115-134
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Pouquet, A.. National Center for Atmospheric Research; Estados Unidos
dc.description.fil
Fil: Lee, E.. National Center for Atmospheric Research; Estados Unidos
dc.description.fil
Fil: Brachet, M. E.. National Center for Atmospheric Research; Estados Unidos. Ecole Normale Supérieure; Francia
dc.description.fil
Fil: Mininni, Pablo Daniel. National Center for Atmospheric Research; Estados Unidos. Universidad de Buenos Aires; Argentina. 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: Rosenberg, Duane. National Center for Atmospheric Research; Estados Unidos
dc.journal.title
Geophysical And Astrophysical Fluid Dynamics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1080/03091920903304080
Archivos asociados