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Bubble cavitation in a microchannel.

Author(s) : LI J., CHENG P.

Type of article: Article

Summary

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.

Details

  • Original title: Bubble cavitation in a microchannel.
  • Record ID : 2004-2152
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 47 - n. 12-13
  • Publication date: 2004/06

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