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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.1
- 수록면
- 72 - 86 (15page)
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초록· 키워드
오류제보하기
A steam explosion may occur during a severe accident, when the molten core comes intocontact with water. The pressurized water reactor and boiling water reactor ex-vesselsteam explosion study, which was carried out with the multicomponent threedimensionalEulerian fuelecoolant interaction code under the conditions of the Organisationfor Economic Co-operation and Development (OECD) Steam Explosion Resolution forNuclear Applications project reactor exercise, is presented and discussed. In reactor calculations,the largest uncertainties in the prediction of the steam explosion strength areexpected to be caused by the large uncertainties related to the jet breakup. To obtain someinsight into these uncertainties, premixing simulations were performed with both availablejet breakup models, i.e., the global and the local models. The simulations revealed thatweaker explosions are predicted by the local model, compared to the global model, due tothe predicted smaller melt droplet size, resulting in increased melt solidification andincreased void buildup, both reducing the explosion strength. Despite the lower active meltmass predicted for the pressurized water reactor case, pressure loads at the cavity wallsare typically higher than that for the boiling water reactor case. This is because of thesignificantly larger boiling water reactor cavity, where the explosion pressure wave originatingfrom the premixture in the center of the cavity has already been significantlyweakened on reaching the distant cavity wall.
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참고문헌 (17)
참고문헌 신청
M.L. Corradini / 1988 / Vapor explosions in light water reactors, a review of theory and modelling / Prog. Nucl. Energy 22:1~117
G. Berthoud / 2000 / Vapour explosions / Annu. Rev. Fluid Mech 32:573~611
T.G. Theofanous / 1995 / The study of steam explosions in nuclear systems / Nucl. Eng. Des 155:1~26
H. Esmaili / 2005 / Analysis of likelihood of lower head failure and ex-vessel fuel coolant interaction energetics for AP1000 / Nucl. Eng. Des 235:1583~1605
M. Leskovar / 2009 / Estimation of ex-vessel steam explosion pressure loads / Nucl. Eng. Des 239:2444~2458
G. Berthoud / 2000 / Vapour explosions / Annu. Rev. Fluid Mech 32:573~611
T.G. Theofanous / 1995 / The study of steam explosions in nuclear systems / Nucl. Eng. Des 155:1~26
H. Esmaili / 2005 / Analysis of likelihood of lower head failure and ex-vessel fuel coolant interaction energetics for AP1000 / Nucl. Eng. Des 235:1583~1605
M. Leskovar / 2009 / Estimation of ex-vessel steam explosion pressure loads / Nucl. Eng. Des 239:2444~2458
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