MODELING OF SOLID-LIQUID BUBBLES INTERFACE IN PARTIAL NUCLEATE BOILING

An identification of several models of heat transfer in partial nucleate boiling is carried out in order to determine the relationship between the dominant physical parameters. The correlations are different for different models, so the main goal of this analysis is to determine the validity of each model and to identify the most dominating physical phenomenon in the nucleate boiling heat transfer. This is done by comparing the results of different models with a vast range of reliable experimental data. The comparison shows that the Sakashita and Kumada model gives the best results in the nucleate boiling heat transfer. It is also shown that the most dominating phenomenon in isolated partial bubbles zones is the transient conduction taking place mainly under the bubbles. This is in contradiction with a majority of the models which consider convection as the most important mode in the nucleate boiling heat transfer. The selected model can also be extrapolated and used in the case of fully developed bubbles zones.
Автор:  M. E. Hocine Benhamza, Fella Chouarfa
Ключевые слова:  partial nucleate boiling, bubble detachment, heat transfer model.
Стр:  286