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Etude numérique sur la convection laminaire forcée et la génération d'entropie dans une gaine rectangulaire incurvée avec nervures longitudinales montées sur un mur chauffé.

Numerical investigation on laminar forced convection and entropy generation in a curved rectangular duct with longitudinal ribs mounted on heated wall.

Auteurs : KO T. H.

Type d'article : Article

Résumé

Three-dimensional laminar forced convective flow and entropy generation in a 180-deg curved rectangular duct with longitudinal ribs equipped on the heated wall are investigated by numerical methods. The effects of rib size are particularly highlighted in the present paper. The results reveal that the addition of rib can effectively reduce the entropy generation from heat transfer irreversibility since the secondary vortices are augmented by the rib, through which the heat transfer performance is enhanced, in turn making the temperature gradient become smoother. These results provide worthwhile information for considerations of adding ribs on a curved duct and the determinations of rib sizes from view point of thermodynamic second law. [Reprinted with permission from Elsevier. Copyright, 2005].

Détails

  • Titre original : Numerical investigation on laminar forced convection and entropy generation in a curved rectangular duct with longitudinal ribs mounted on heated wall.
  • Identifiant de la fiche : 2006-1651
  • Langues : Anglais
  • Source : International Journal of thermal Sciences - vol. 45 - n. 4
  • Date d'édition : 04/2006

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