Abstract : Linear stability analyses for two-dimensional natural convection in horizontal air-filled annuli are performed for three-dimensional perturbations and radius ratios in the range 1.2 ≤ R ≤ 3. Flow transitions from moderate to large gap annuli, which have not been reported before, are thoroughly
investigated. As a result, stability diagrams are obtained for finite and for infinite length annuli. The leading disturbances and threshold values are found to agree well with experimental data and three-dimensional numerical solutions. Three-dimensional simulations were also carried out to
examine the influence on the flow stability of no-slip boundary conditions at the end walls.
Type de document :
Article dans une revue
Physics of Fluids, American Institute of Physics, 2006, 18 (10), pp.104107-1/14
https://hal-upec-upem.archives-ouvertes.fr/hal-00749542
Contributeur : Eric Chénier
<>
Soumis le : samedi 3 juin 2017 - 16:45:38
Dernière modification le : mercredi 7 juin 2017 - 16:39:56
Document(s) archivé(s) le : mercredi 13 décembre 2017 - 06:10:42
G. Petrone, Eric Chénier, Guy Lauriat. Stability analysis of natural convective flows in horizontal annuli: effects of axial and radial aspect ratios. Physics of Fluids, American Institute of Physics, 2006, 18 (10), pp.104107-1/14. 〈hal-00749542〉
