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Etude numérique de l'écoulement du fluide et du transfert de chaleur sur des ailettes persiennes dans un échangeur de chaleur compact.

Numerical investigation of fluid flow and heat transfer over louvered fins in compact heat exchanger.

Auteurs : MALAPURE V. P., MITRA S. K., BHATTACHARYA A.

Type d'article : Article

Résumé

Numerical investigation of fluid flow and heat transfer characteristics over louvered fins and flat tube in compact heat exchangers is presented in this study. Three-dimensional simulations of single and double row tubes with louvered fins have been conducted. Simulations are performed for different geometries with varying louver pitch, louver angle, fin pitch and tube pitch and for different Reynolds numbers. Conjugate heat transfer and conduction through the fins are considered. The air-side performance of the heat exchanger is evaluated by calculating the Stanton number and the friction factor. The results are compared with the experiment and a good agreement is observed. The local Nusselt number variation along with the top surface of the louver is calculated and effects of geometrical parameters on the average heat transfer coefficient is computed. Design curves are obtained which can be used to predict the heat transfer and the pressure drop for a given louver geometry. [Reprinted with permission from Elsevier. Copyright, 2006].

Détails

  • Titre original : Numerical investigation of fluid flow and heat transfer over louvered fins in compact heat exchanger.
  • Identifiant de la fiche : 2007-0551
  • Langues : Anglais
  • Source : International Journal of thermal Sciences - vol. 46 - n. 2
  • Date d'édition : 02/2007

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