Proceedings of the Korean Nuclear Society Conference (한국원자력학회:학술대회논문집)
- 1998.05a
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- Pages.449-456
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- 1998
Theoretical Prediction Method of Subcooled Flow Boiling CHF
- Kwon, Yong-Min (Korea Atomic Energy Research Institute) ;
- Cahng, Soon-Heung (Korea Atomic Energy Research Institute)
- Published : 1998.05.01
Abstract
A theoretical critical heat flux (CLE) model. based on lateral bubble coalescence on the heated wall, is proposed to predict the subcooled flow boiling CHF in a uniformly heated vertical tube. The model is based on the concept that a single layer of bubbles contacted to the heated wall events a bulk liquid from reaching the wall at near CHF condition. Comparisons between the model predictions and experimental data result in satisfactory agreement within less than 9.73 % root-mean-square error by the appropriate choice of the critical void fraction in the bubbly layer. The present model shows comparable performance with the CHF look-up table of Groeneveld et al.
Keywords