Artículo
Rotating helical turbulence. I. Global evolution and spectral behavior
Fecha de publicación:
03/2010
Editorial:
American Institute of Physics
Revista:
Physics of Fluids
ISSN:
1070-6631
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We present results from two 15363 direct numerical simulations of rotating turbulence where both energy and helicity are injected into the flow by an external forcing. The dual cascade of energy and helicity toward smaller scales observed in isotropic and homogeneous turbulence is broken in the presence of rotation, with the development of an inverse cascade of energy now coexisting with direct cascades of energy and helicity. In the direct cascade range, the flux of helicity dominates over that of energy at low Rossby number. These cascades have several consequences for the statistics of the flow. The evolution of global quantities and of the energy and helicity spectra is studied, and comparisons with simulations at different Reynolds and Rossby numbers at lower resolution are done to identify scaling laws. © 2010 American Institute of Physics.
Palabras clave:
Turbulence Simulation And Modeling
,
Vortex Dynamics
,
Rotating Fluids
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Identificadores
Colecciones
Articulos(IFIBA)
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos de INST.DE FISICA DE BUENOS AIRES
Citación
Mininni, Pablo Daniel; Pouquet, A.; Rotating helical turbulence. I. Global evolution and spectral behavior; American Institute of Physics; Physics of Fluids; 22; 3; 3-2010; 5-9
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