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Flux thermique critique dans des enrobages fins et uniformes de particules.

Critical heat flux in thin, uniform particle coatings.

Auteurs : HWANG G. S., KAVIANY M.

Type d'article : Article

Résumé

Pool boiling on thin, uniform porous coatings is examined experimentally using different copper particle diameters, fabrications (loosely packed, shaken, or pressed), and particle characteristics (solid or porous particle) with coating thickness varying between 3 and 5 particle diameters. The results show that the critical heat flux (CHF) is about 1.8 times for all the coatings, while the pre-CHF regime shows variations. The authors suggest that the presence of the thin, uniform porous coating influences the hydrodynamic (macroscale) stabilities such that statistically the critical Rayleigh-Taylor wavelength decreases and/or the vapour area fraction increases in a manner to statistically cause a decrease in the dominant interfacial wavelength. [Reprinted with permission from Elsevier. Copyright, 2005].

Détails

  • Titre original : Critical heat flux in thin, uniform particle coatings.
  • Identifiant de la fiche : 2006-2239
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 49 - n. 5-6
  • Date d'édition : 03/2006

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