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dc.contributor.author
Baerenzung, J.  
dc.contributor.author
Mininni, Pablo Daniel  
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Pouquet, A.  
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Politano, H.  
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Ponty, Y.  
dc.date.available
2018-09-11T16:40:43Z  
dc.date.issued
2010-02  
dc.identifier.citation
Baerenzung, J.; Mininni, Pablo Daniel; Pouquet, A.; Politano, H.; Ponty, Y.; Spectral modeling of rotating turbulent flows; American Institute of Physics; Physics of Fluids; 22; 2; 2-2010; 1-13  
dc.identifier.issn
1070-6631  
dc.identifier.uri
http://hdl.handle.net/11336/59077  
dc.description.abstract
A subgrid-scale spectral model of rotating turbulent flows is tested against direct numerical simulations (DNSs). The case of Taylor-Green forcing is considered, a configuration that mimics the flow between two counter-rotating disks as often used in the laboratory. Computations are performed for moderate rotation down to Rossby numbers of 0.03, as can be encountered in the Earth's atmosphere. We provide several measures of the degree of anisotropy of the small scales and conclude that an isotropic model may suffice at moderate Rossby number. The model, developed previously [J. Baerenzung, H. Politano, Y. Ponty, and A. Pouquet, "Spectral modeling of turbulent flows and the role of helicity," Phys. Rev. E77, 046303 (2008)], incorporates eddy viscosity and eddy noise that depend dynamically on the index of the energy spectrum. We show that the model reproduces satisfactorily all large-scale properties of the DNS up to Reynolds numbers of ~104 and for long times after the onset of the inverse cascade of energy; it is also shown to behave better than either the Chollet-Lesieur eddy viscosity model [J. P. Chollet and M. Lesieur, "Parametrization of small scales of three-dimensional isotropic turbulence utilizing spectral closures," J. Atmos. Sci.38, 2747 (1981)] or an under-resolved DNS. © 2010 American Institute of Physics.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
American Institute of Physics  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Rotating And Swirling Flows  
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Spectral Methods  
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Large-Eddy Simulations  
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Astronomía  
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Ciencias Físicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Spectral modeling of rotating turbulent flows  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-09-10T16:32:52Z  
dc.journal.volume
22  
dc.journal.number
2  
dc.journal.pagination
1-13  
dc.journal.pais
Estados Unidos  
dc.journal.ciudad
Nueva York  
dc.description.fil
Fil: Baerenzung, J.. National Center for Atmospheric Research; Estados Unidos  
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: Pouquet, A.. National Center for Atmospheric Research; Estados Unidos  
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Fil: Politano, H.. Observatoire de la Cote D'azur; Francia  
dc.description.fil
Fil: Ponty, Y.. Observatoire de la Cote D'azur; Francia  
dc.journal.title
Physics of Fluids  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1063/1.3292008