A lattice Boltzmann study of non-hydrodynamic effects in shell models of turbulence

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dc.creatorBenzi, R.
dc.creatorBiferale, L.
dc.creatorSbragaglia, M.
dc.creatorSucci, S.
dc.creatorToschi, F.
dc.date2004-06-07
dc.date.accessioned2026-07-07T05:35:36Z
dc.date.available2026-07-07T05:35:36Z
dc.descriptionA lattice Boltzmann scheme simulating the dynamics of shell models of turbulence is developed. The influence of high order kinetic modes (ghosts) on the dissipative properties of turbulence dynamics is studied. It is analytically found that when ghost fields relax on the same time scale as the hydrodynamic ones, their major effect is a net enhancement of the fluid viscosity. The bare fluid viscosity is recovered by letting ghost fields evolve on a much longer time scale. Analytical results are borne out by high-resolution numerical simulations. These simulations indicate that the hydrodynamic manifold is very robust towards large fluctuations of non hydrodynamic fields.
dc.description17 pages, 3 figures, submitted to Physica D
dc.identifierhttps://arxiv.org/abs/nlin/0406009
dc.identifierhttp://arxiv.org/abs/nlin/0406009
dc.identifierPhysica D 197 3-4 (2004) 303-312
dc.identifierdoi:10.1016/j.physd.2004.07.004
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/80751
dc.subjectChaotic Dynamics
dc.subjectFluid Dynamics
dc.titleA lattice Boltzmann study of non-hydrodynamic effects in shell models of turbulence
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