{ "id": "0806.4546", "version": "v1", "published": "2008-06-27T15:21:35.000Z", "updated": "2008-06-27T15:21:35.000Z", "title": "Inverse kinetic theory for incompressible thermofluids", "authors": [ "C. Cremaschini", "and M. Tessarotto" ], "comment": "Contributed paper at RGD26 (Kyoto, Japan, July 2008)", "doi": "10.1063/1.3076471", "categories": [ "physics.flu-dyn", "physics.class-ph" ], "abstract": "An interesting issue in fluid dynamics is represented by the possible existence of inverse kinetic theories (IKT) which are able to deliver, in a suitable sense, the complete set of fluid equations which are associated to a prescribed fluid. From the mathematical viewpoint this involves the formal description of a fluid by means of a classical dynamical system which advances in time the relevant fluid fields. The possibility of defining an IKT for the 3D incompressible Navier-Stokes equations (INSE), recently investigated (Ellero \\textit{et al}, 2004-2007) raises the interesting question whether the theory can be applied also to thermofluids, in such a way to satisfy also the second principle of thermodynamics. The goal of this paper is to prove that such a generalization is actually possible, by means of a suitable \\textit{extended phase-space formulation}. We consider, as a reference test, the case of non-isentropic incompressible thermofluids, whose dynamics is described by the Fourier and the incompressible Navier-Stokes equations, the latter subject to the conditions of validity of the Boussinesq approximation.", "revisions": [ { "version": "v1", "updated": "2008-06-27T15:21:35.000Z" } ], "analyses": { "subjects": [ "05.70.Ln", "52.25.Dg", "47.10.ad", "47.40.-x", "51.10.+y" ], "keywords": [ "inverse kinetic theory", "3d incompressible navier-stokes equations", "relevant fluid fields", "phase-space formulation", "second principle" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "inspire": 846032, "adsabs": "2008AIPC.1084..188C" } } }