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Stabilité linéaire tridimensionnelle de la convection naturelle dans les anneaux concentriques horizontaux.

Three-dimensional linear stability of natural convection in horizontal concentric annuli.

Auteurs : ADACHI T., IMAI S.

Type d'article : Article

Résumé

The authors have performed three-dimensional linear stability analyses of natural convection of air (Pr= 0.71) in horizontal annuli between concentric cylinders by using a spectral element method. A linear stability theory is applied to a basic two-dimensional steady solution which is called a crescent-shaped convection, and an eigenvalue problem of matrix form is constituted. They evaluate a critical Rayleigh number where the basic flow loses its stability with respect to three-dimensional disturbances over a wide range of aspect ratio. It is found that the instability mode which destabilizes the basic convection exchanges among three different modes, and the new transition lines are proposed. [Reprinted with permission from Elsevier. Copyright, 2006].

Détails

  • Titre original : Three-dimensional linear stability of natural convection in horizontal concentric annuli.
  • Identifiant de la fiche : 2007-1961
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 50 - n. 7-8
  • Date d'édition : 04/2007

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