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Thermocapillary breakdown of subcooled falling liquid films.

Author(s) : HOKE B. C., CHEN J. C.

Type of article: Article

Summary

Attention is focused on thermocapillary breakdown, resulting from lateral flow diversion induced by a Marangoni effect associated with temperature gradients in the falling film. Combined with a force-balance model for a stable dry patch, an analysis is developed to predict film breakdown. Experiments were conducted with water, 2-propanol, and ethylene glycol, over a film Reynolds number range of 5-1074 and various degrees of subcooling. New data, along with earlier published data for subcooled films, are sucessfully correlated with the proposed model in terms of a diversion parameter. Comparison between the experimental data and the model show an average deviation of 26%, a substantial improvement over existing correlations.

Details

  • Original title: Thermocapillary breakdown of subcooled falling liquid films.
  • Record ID : 1993-0182
  • Languages: English
  • Source: Ind. eng. Chem. Res. - vol. 31 - n. 3
  • Publication date: 1992/03
  • Document available for consultation in the library of the IIR headquarters only.

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