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Caloducs rotatifs à grande vitesse : modélisation de l'écoulement de fluide et du transfert de chaleur.

Fluid flow and heat transfer model for high-speed rotating heat pipes.

Auteurs : SONG F., EWING D., CHING C. Y.

Type d'article : Article

Résumé

A new complete model has been developed to predict the performance of high-speed rotating heat pipes with centrifugal accelerations up to 10 000 g. The flow and heat transfer in the condenser is modelled using a conventional modified Nusselt film condensation approach. The heat transfer in the evaporator was previously modelled using a modified Nusselt film evaporation approach. It was found, however, that natural convection in the liquid film becomes more significant at higher accelerations and larger fluid loadings. A simplified evaporation model including mixed convection was developed and coupled with the film condensation model. The predictions of the model are in reasonable agreement with existing experimental data. The effects of working fluid loading, rotational speed, and pipe geometry on the heat pipe performance are reported.

Détails

  • Titre original : Fluid flow and heat transfer model for high-speed rotating heat pipes.
  • Identifiant de la fiche : 2004-1670
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 46 - n. 23
  • Date d'édition : 11/2003

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