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논문 기본 정보

자료유형
학술저널
저자정보
Ruicong Xu (Sun Yat-sen University) Songbai Cheng (Sun Yat-sen University) Shuo Li (Sun Yat-sen University) Hui Cheng (Sun Yat-sen University)
저널정보
한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제54권 제2호
발행연도
2022.2
수록면
589 - 600 (12page)

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Investigations on the molten-pool sloshing behavior are of essential value for improving nuclear safetyevaluation of Core Disruptive Accidents (CDA) that would be possibly encountered for Sodium-cooledFast Reactors (SFR). This paper is aimed at synthesizing the knowledge from our recent studies onmolten-pool sloshing behavior with solid particles conducted at the Sun Yat-sen University. To bettervisualize and clarify the mechanism and characteristics of sloshing induced by local Fuel-CoolantInteraction (FCI), experiments were performed with various parameters by injecting nitrogen gas intoa 2-dimensional liquid pool with accumulated solid particles. It was confirmed that under differentparticle-bed conditions, three representative flow regimes (i.e. the bubble-impulsion dominant, transitional and bed-inertia dominant regimes) are identifiable. Aimed at predicting the regime transitionsduring sloshing process, a predictive empirical model along with a regime map was proposed on thebasis of experiments using single-sized spherical solid particles, and then was extended for coveringmore complex particle conditions (e.g. non-spherical, mixed-sized and mixed-density spherical particleconditions). To obtain more comprehensive understandings and verify the applicability and reliability ofthe predictive model under more realistic conditions (e.g. large-scale 3-dimensional condition), furtherexperimental and modeling studies are also being prepared under other more complicated actualconditions

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