Experimental investigation on bubble behaviors in a water pool using the venturi scrubbing nozzle

최유정; 감동훈; Petros Papadopoulos; Terttaliisa Lind; 정용훈

doi:https://doi.org/10.1016/j.net.2020.11.024

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자료유형: 학술저널

저자정보: 최유정 (한국과학기술원) 감동훈 (한국과학기술원) Petros Papadopoulos (Paul Scherrer Institute CH-5232 Villigen Switzerland) Terttaliisa Lind (Paul Scherrer Institute CH-5232 Villigen Switzerland) 정용훈 (한국과학기술원)

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제53권 제6호

발행연도: 2021.6

수록면: 1,756 - 1,768 (13page)

DOI: https://doi.org/10.1016/j.net.2020.11.024

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The containment filtered venting system (CFVS) filters the atmosphere of the containment building anddischarges a part of it to the outside environment to prevent containment overpressure during severeaccidents. The Korean CFVS has a tank that filters fission products from the containment atmosphere bypool scrubbing, which is the primary decontamination process; however, prediction of its performancehas been done based on researches conducted under mild conditions than those of severe accidents. Bubble behavior in a pool is a key parameter of pool scrubbing. Therefore, the bubble behavior in the poolwas analyzed under various injection flow rates observed at the venturi nozzles used in the Korean CFVSusing a wire-mesh sensor. Based on the experimental results, void fraction model was modified using theexisting correlation, and a new bubble size prediction model was developed. The modified void fractionmodel agreed well with the obtained experimental data. However, the newly developed bubble sizeprediction model showed different results to those established in previous studies because the venturinozzle diameter considered in this study was larger than those in previous studies. Therefore, this is thefirst model that reflects actual design of a venturi scrubbing nozzle

#Venturi scrubbing nozzle #Wire-mesh sensor #Containment filtered venting system #Bubble size distribution #Void fraction #Bubble size prediction model

참고문헌 (19)

참고문헌 신청

S.W. Lee / 2014 / Containment depressurization capabilities of filtered venting system in 1000MWe PWR with large dry containment / Sci. Technol. Nucl. Install 2014:841895

S.W. Lee / 2019 / Droplet Size Prediction Model Based on Upper Limit Log Normal Distribution in Venturi Scrubber

D.D. Paul / 1985 / Radionuclide Scrubbing in Water Pools, Gas-Liquid Hydrodynamics 1

S.A. Ramsdale / 1992 / Status of Research and Modelling of Water-Pool Scrubbing

A. Dehbi / 2019 / Aerosol retention in low-subcooling pools under realistic accident conditions / Nucl. Eng. Des 203:229~241

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