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Главная Архив Thermal Letter Оргкомитет Будущие конференции AIHTC
International Heat Transfer Conference 12

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

A Comprehensive Assessment of Round Tube CHF Prediction Models for Square-Latticed Rod Bundles

Dae-Hyun Hwang
Advanced Reactor Development Korea Atomic Energy Research Institute P.O. Box 105, Yusong Taejon 305-600 Korea

Sung-Quun Zee
Korea Atomic Energy Research Institute, P.O.Box 105, Yusong, Daejon, Korea, 305-600

Moon-Hee Chang
Korea Atomic Energy Research Institute, P.O.Box 105, Yusong, Daejon, Korea, 305-600

DOI: 10.1615/IHTC12.5470
6 pages

Аннотация

A feasibility study on the application of round tube CHF prediction models to square-lattice rod bundles was conducted by employing empirical correlations, theoretical DNB models, and the CHF lookup table method. CHF data for square-lattice rod bundles have been collected extensively under PWR and BWR conditions. The local thermal hydraulic conditions at CHF locations were calculated by a subchannel analysis code. In view of the applicable range and the prediction accuracy, the CHF lookup table method appeared to be a promising model applicable to rod bundles. For 9113 CHF data points from rod bundles with uniform axial power shapes, the mean and standard deviation of P/M by the 'heat balance method' and 'direct substitution method' were evaluated as 0.982/0.109 and 0.966/0.287, respectively.

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