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Heat Transfer Research
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ISSN Imprimir: 1064-2285
ISSN En Línea: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v40.i8.50
pages 793-804

Validity of Solid-Liquid Bubble Interface Modeling in Partial Nucleate Boiling

M-ed El Hocine Benhamza
Laboratoire d'Analyses Industrielles et Génie des Matériaux, Guelma University
Fella Chouarfa
Laboratoire d'Analyses Industrielles et Génie des Matériaux, Guelma University, Guelma 24000, P.O. Box 401, Algeria

SINOPSIS

In this study, an identification of various models of partial nucleate boiling heat transfer is carried out in order to recognize the dependence between dominant physical parameters. There is a multitude of correlations for modeling nucleate boiling heat transfer phenomena, so the main goal of this analysis is to determine the validity of each model and at the same time to identify the more dominating nucleate boiling heat transfer physical phenomenon. This is done by comparing different models with a vast range of reliable experimental data. Comparison between various correlations and experimental data shows that the Sakashita and Kumada model gives the best results in nucleate boiling heat transfer. Results also show that the most dominating physical phenomenon in the zones of partially isolated bubbles is transient conduction, taking place mainly under the bubbles. This is in contrast with the majority of the models which consider convection as the most important mode in nucleate boiling heat transfer. An increase in the nucleation-site density leads to a decrease in the size of activation cavities as well as in a detachment diameter of vapor bubbles. The selected model can also be extrapolated and used in the case of fully developed bubble zones.

REFERENCIAS

  1. Hiroto Shakashita, Experimental Data.

  2. Tien, C. L., A hydrodynamic model for nucleate boiling heat transfer.

  3. Nishikawa, K. and Yamagata, K., Engineering and equipment; boiling; bubbles; convection superheating; surface.

  4. Hara, A., The mechanics of nucleate boiling heat transfer.

  5. Pioro, I. L., Rohsenow, W., and Doerffer, S. S., Nucleate pool-boiling heat transfer.

  6. Kurihara, H. and Meyers, J. E., The effects of superheat and surface roughness on boiling coefficients.

  7. Kumada, T. and Sakashita, H., Pool boiling heat transfer-II.

  8. Kocamustafaogullari, G. and Ishii, M., Interfacial area and nucleation site density in boiling system.

  9. Iida, Y. and Kobayashi, K., Buubles; film boiling; heat transfer; mechanics; nucluate boiling; poool boiling; production vapors.


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