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Cavitation des bulles dans un microcanal.

Bubble cavitation in a microchannel.

Auteurs : LI J., CHENG P.

Type d'article : Article

Résumé

The effects of microchannel size, mass flow rate and heat flux on boiling incipience or bubble cavitation in a microchannel are studied in this article. The well-known concept of survival of a bubble cavity is extended, and the classical kinetics of nucleation is introduced to study bubble nucleation in water flowing in a silicon microchannel. The effects of contact angle, dissolved gas, and the existence of microcavities and corners in the microchannel on the bubble's nucleation/cavitation temperature were estimated. With this information, a numerical solution was applied in order to study the effects of mass flow rate and heat flux on bubble nucleation/cavitation in microchannels. The results of this analysis provide further physical insight on boiling heat transfer in microchannels.

Détails

  • Titre original : Bubble cavitation in a microchannel.
  • Identifiant de la fiche : 2004-2152
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 47 - n. 12-13
  • Date d'édition : 06/2004

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