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Heat Transfer Research

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ISSN Print: 1064-2285
ISSN Online: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v30.i7-8.140
pages 532-538

Cyclic/Pulsating Boiling from Curved Downward Facing Surface

L. A. Bolshov
Nuclear Safety Institute, Russian Academy of Sciences, Bolshaya Tulskaya 52, Moscow 113191, Russia
P. S. Kondratenko
Nuclear Safety Institute, Russian Academy of Sciences, Bolshaya Tulskaya 52, Moscow 113191, Russia

ABSTRACT

A simple qualitative model for the cyclic/pulsating boiling regime from curved, downward facing surfaces discovered in recent experiments is proposed. The basis of the model consists in simultaneous taking account of nucleate boiling and heat convection under condition of liquid subcooling. Correlations between the boiling regime characteristics and the heat flux are derived and the problem of critical heat flux is discussed. The results obtained are in qualitative agreement with experiment.