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Compressible Convective Instability by Molecular Dynamics (Dedicated to Berni J. Alder)

par Mareschal, Michel ;Vantieghem, Stijn ;Mugnai, M.-L.;Caprara, Sergio;Ciccotti, Giovanni;Pierleoni, C.
Référence Progress of Theoretical Physics. Supplement, 178, page (15-23)
Publication Publié, 2009

Article révisé par les pairs

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Résumé :

We report on simulations of two-dimensional fluids subjected to a temperature gradient, with an orthogonal gravity field suddenly switched on. Short-time behavior is dominated by rapid oscillations for the temperature and density field variables: the latter are interpreted as compressibility effects accurately described by linearized hydrodynamic equations until convective transport establishes itself.