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dc.contributor.author
Clark Di Leoni, Patricio
dc.contributor.author
Mininni, Pablo Daniel
dc.date.available
2018-06-21T14:22:23Z
dc.date.issued
2016-11
dc.identifier.citation
Clark Di Leoni, Patricio; Mininni, Pablo Daniel; Quantifying resonant and near-resonant interactions in rotating turbulence; Cambridge University Press; Journal of Fluid Mechanics; 809; 11-2016; 821-842
dc.identifier.issn
0022-1120
dc.identifier.uri
http://hdl.handle.net/11336/49524
dc.description.abstract
Nonlinear triadic interactions are at the heart of our understanding of turbulence. In flows where waves are present, modes must not only be in a triad to interact, but their frequencies must also satisfy an extra condition: the interactions that dominate the energy transfer are expected to be resonant. We derive equations that allow direct measurement of the actual degree of resonance of each triad in a turbulent flow. We then apply the method to the case of rotating turbulence, where eddies coexist with inertial waves. We show that for a range of wavenumbers, resonant and near-resonant triads are dominant, the latter allowing a transfer of net energy towards two-dimensional modes that would be inaccessible otherwise. The results are in good agreement with approximations often done in theories of rotating turbulence, and with the mechanism of parametric instability proposed to explain the development of anisotropy in such flows. We also observe that, at least for the moderate Rossby numbers studied here, marginally near-resonant and non-resonant triads play a non-negligible role in the coupling of modes.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Cambridge University Press
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Rotating Turbulence
dc.subject
Turbulence Theory
dc.subject
Wave-Turbulence Interactions
dc.subject.classification
Astronomía
dc.subject.classification
Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Quantifying resonant and near-resonant interactions in rotating 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
2018-06-12T16:06:25Z
dc.journal.volume
809
dc.journal.pagination
821-842
dc.journal.pais
Reino Unido
dc.journal.ciudad
Cambridge
dc.description.fil
Fil: Clark Di Leoni, Patricio. Universidad de Buenos Aires; Argentina
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.journal.title
Journal of Fluid Mechanics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/journal-of-fluid-mechanics/article/div-classtitlequantifying-resonant-and-near-resonant-interactions-in-rotating-turbulencediv/C715D0F64528EF8025F7B0F08B755D9B
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1017/jfm.2016.713
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