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dc.contributor.author
Mininni, Pablo Daniel  
dc.contributor.author
Alexakis, A.  
dc.contributor.author
Pouquet, A.  
dc.date.available
2018-10-11T16:47:24Z  
dc.date.issued
2008-12  
dc.identifier.citation
Mininni, Pablo Daniel; Alexakis, A.; Pouquet, A.; Nonlocal interactions in hydrodynamic turbulence at high Reynolds numbers: The slow emergence of scaling laws; American Physical Society; Physical Review E: Statistical, Nonlinear and Soft Matter Physics; 77; 3; 12-2008; 363061-363069  
dc.identifier.issn
1539-3755  
dc.identifier.uri
http://hdl.handle.net/11336/62204  
dc.description.abstract
We analyze the data stemming from a forced incompressible hydrodynamic simulation on a grid of 20483 regularly spaced points, with a Taylor Reynolds number of Rλ ∼1300. The forcing is given by the Taylor-Green vortex, which shares similarities with the von Kàrmàn flow used in several laboratory experiments; the computation is run for ten turnover times in the turbulent steady state. At this Reynolds number the anisotropic large scale flow pattern, the inertial range, the bottleneck, and the dissipative range are clearly visible, thus providing a good test case for the study of turbulence as it appears in nature. Triadic interactions, the locality of energy fluxes, and longitudinal structure functions of the velocity increments are computed. A comparison with runs at lower Reynolds numbers is performed and shows the emergence of scaling laws for the relative amplitude of local and nonlocal interactions in spectral space. Furthermore, the scaling of the Kolmogorov constant, and of skewness and flatness of velocity increments is consistent with previous experimental results. The accumulation of energy in the small scales associated with the bottleneck seems to occur on a span of wave numbers that is independent of the Reynolds number, possibly ruling out an inertial range explanation for it. Finally, intermittency exponents seem to depart from standard models at high Rλ, leaving the interpretation of intermittency an open problem. © 2008 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  
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Ciencias Físicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Nonlocal interactions in hydrodynamic turbulence at high Reynolds numbers: The slow emergence of scaling laws  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-10-05T19:12:04Z  
dc.journal.volume
77  
dc.journal.number
3  
dc.journal.pagination
363061-363069  
dc.journal.pais
Estados Unidos  
dc.journal.ciudad
Nueva York  
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: Alexakis, A.. Observatoire de la Cote D'azur; Francia  
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/doi/http://dx.doi.org/10.1103/PhysRevE.77.036306