Partager

Document IIF

Recherche sur le transfert de chaleur et les caractéristiques d'écoulement des tubes ondulés.

Research on heat transfer and flow characteristics of corrugated tubes.

Auteurs : JI C., HOU L. J., WANG M.

Résumé

Pointing at the special characteristics of flow field in corrugated tubes, a numerical simulation was performed by using the RNG k-epsilon turbulence model for three-dimensional fluid and the boundary condition of constant wall temperature in the tubes. The characteristics of turbulent flow and heat transfer in corrugated tubes of the diameter 16 mm and the length 740 mm were studied, with water at constant temperature as the medium and in different conditions of the velocity of flow at 0.5, 0.8 and 1.2 m/s. The temperature, velocity distribution, pressure value, turbulence intensity and the Nu number at different sections for fully developed fluid were obtained, which were compared with the results of smooth tubes. The numerical results showed that the quantity of heat transfer increased with the increase of the velocity of flow and the effect of turbulent enhanced heat transfer strengthened. It was found that the corrugated tubes can significantly enhance the heat transfer under the same diameter condition.

Documents disponibles

Format PDF

Pages : ICR07-B2-443

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Research on heat transfer and flow characteristics of corrugated tubes.
  • Identifiant de la fiche : 2008-0085
  • Langues : Anglais
  • Source : ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Date d'édition : 21/08/2007

Liens


Voir d'autres communications du même compte rendu (839)
Voir le compte rendu de la conférence

Indexation