CHF and dryout point in vertical narrow annuli

Geping, Wu; Qiu, Suizheng; Su, G.H.; Tian, Wenxi; Dounan, Jia

doi:10.1016/j.nucengdes.2007.03.043

Cited by 7 publications

(1 citation statement)

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“…e numerical simulation represents well the transient behavior of the Dryout under the oscillatory flow condition. Geping et al [12] experimentally studied CHF and Dryout point in narrow annuli pipe, and based on experiment data, a new correlation is developed. Celata et al [13] presents an analytical model for the prediction of the CHF in water saturated flow boiling in round vertical and uniformly heated pipes.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Study on the Characteristics of Critical Heat Flux in Rectangular Channel of Natural Circulation under Motion Conditions

Cai

Chu

et al. 2020

Science and Technology of Nuclear Installations

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With the wide application of sea-based reactors, the impact of ocean conditions on the safety performance of reactors has gradually attracted attention. In this paper, by establishing the thermal hydraulic transient analysis model and the critical heat flux (CHF) model of natural circulation system, the CHF characteristics in the rectangular channel of natural self-feedback conditions under ocean conditions are studied. The results show that the additional acceleration field generated by ocean conditions will affect the thermal hydraulic parameters of the natural circulation system, that is, the external macroscopic thermal hydraulic field. On the other hand, the boiling crisis mechanism will be affected, that is, the force on the bubble and the thickness of the liquid film. Within the parameters of the study, ocean conditions have a great impact on CHF of natural circulation, and the maximum degradation of CHF is about 45%. The obtained analysis results are significant to the improvement of design and safety operation of the reactor system.

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Section: Introductionmentioning

confidence: 99%