{ "id": "cond-mat/0310618", "version": "v2", "published": "2003-10-27T08:52:40.000Z", "updated": "2004-02-06T15:25:34.000Z", "title": "Kinetic Theory of Turbulence Modeling: Smallness Parameter, Scaling and Microscopic Derivation of Smagorinsky Model", "authors": [ "Santosh Ansumali", "Iliya V. Karlin", "Sauro Succi" ], "comment": "18 pages, Minor corrections, Accepted in Physica A", "journal": "Physica A, Vol. 338, pp. 379-394 (2004)", "doi": "10.1016/j.physa.2004.02.013", "categories": [ "cond-mat.stat-mech", "math-ph", "math.MP", "nlin.CD", "physics.flu-dyn" ], "abstract": "A mean-field approach (filtering out subgrid scales) is applied to the Boltzmann equation in order to derive a subgrid turbulence model based on kinetic theory. It is demonstrated that the only Smagorinsky type model which survives in the hydrodynamic limit on the viscosity time scale is the so-called tensor-diffusivity model. Scaling of the filter-width with Reynolds number and Knudsen number is established. This sets the first rigorous step in deriving turbulence models from kinetic theory.", "revisions": [ { "version": "v2", "updated": "2004-02-06T15:25:34.000Z" } ], "analyses": { "keywords": [ "kinetic theory", "microscopic derivation", "smallness parameter", "smagorinsky model", "viscosity time scale" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 18, "language": "en", "license": "arXiv", "status": "editable" } } }