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Analyses tridimensionnelles de la convection à double diffusion pour des nombres de Rayleigh élevés dans un système à deux couches.

Three-dimensional analyses of double diffusive convection in a two-layer system at high Rayleigh numbers.

Auteurs : KAMAKURA K., OZOE H.

Type d'article : Article

Résumé

Three-dimensional numerical computations of double diffusive natural convection were carried out for the Prandtl number Pr = 6, the Lewis number Le = 100, the aspect ratio A = 2, the Rayleigh number Ra = 10(7) and various buoyancy ratios N for a two-layer system which consists of a pure water (upper layer) and an aqueous solution (lower layer) with lateral heating and cooling. Salt fingers with bulbous extremities were formed owing to the penetration of convective flow from one layer into the other layer at N = 0.3 and plumes were formed by the collision of solutal fragments with the interface at N = 0.6 or 1.

Détails

  • Titre original : Three-dimensional analyses of double diffusive convection in a two-layer system at high Rayleigh numbers.
  • Identifiant de la fiche : 2003-1724
  • Langues : Anglais
  • Source : International Journal of thermal Sciences - vol. 41 - n. 11
  • Date d'édition : 11/2002

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