The decay of homogeneous anisotropic turbulence

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dc.creatorBiferale, L.
dc.creatorBoffetta, G.
dc.creatorCelani, A.
dc.creatorLanotte, A.
dc.creatorToschi, F.
dc.creatorVergassola, M.
dc.date2003-01-28
dc.date.accessioned2026-07-07T05:34:31Z
dc.date.available2026-07-07T05:34:31Z
dc.descriptionWe present the results of a numerical investigation of three-dimensional decaying turbulence with statistically homogeneous and anisotropic initial conditions. We show that at large times, in the inertial range of scales: (i) isotropic velocity fluctuations decay self-similarly at an algebraic rate which can be obtained by dimensional arguments; (ii) the ratio of anisotropic to isotropic fluctuations of a given intensity falls off in time as a power law, with an exponent approximately independent of the strength of the fluctuation; (iii) the decay of anisotropic fluctuations is not self-similar, their statistics becoming more and more intermittent as time elapses. We also investigate the early stages of the decay. The different short-time behavior observed in two experiments differing by the phase organization of their initial conditions gives a new hunch on the degree of universality of small-scale turbulence statistics, i.e. its independence of the conditions at large scales.
dc.description9 pages, 17 figures
dc.identifierhttps://arxiv.org/abs/nlin/0301040
dc.identifierhttp://arxiv.org/abs/nlin/0301040
dc.identifierPhysics of Fluids 15 8 (2003) 2105
dc.identifierdoi:10.1063/1.1582859
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/80394
dc.subjectChaotic Dynamics
dc.titleThe decay of homogeneous anisotropic turbulence
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