Investigation on the effect of eccentricity for fuel disc irradiation tests

A. Scolaro; P. Van Uffelen; C. Fiorina; A. Schubert; I. Clifford; A. Pautz

doi:https://doi.org/10.1016/j.net.2020.11.003

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자료유형: 학술저널

저자정보: A. Scolaro (Ecole Polytechnique Federale de Lausanne (EPFL)) P. Van Uffelen (Joint Research Center (JRC), Karlsruhe, Germany) C. Fiorina (Ecole Polytechnique Federale de Lausanne (EPFL)) A. Schubert (Joint Research Center (JRC), Karlsruhe, Germany) I. Clifford (Paul Scherrer Institut (PSI), Villigen, Switzerland) A. Pautz (Ecole Polytechnique Federale de Lausanne (EPFL))

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제53권 제5호

발행연도: 2021.5

수록면: 1,602 - 1,611 (10page)

DOI: https://doi.org/10.1016/j.net.2020.11.003

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A varying degree of eccentricity always exists in the initial configuration of a nuclear fuel rod. Its impacton traditional LWR fuel is limited as the radial gap closes relatively early during irradiation. However, theeffect of misalignment is expected to be more relevant in rods with highly conductive fuels, large initialgaps and low conductivity filling gases. In this paper, we study similar characteristics in the experimentalsetup of two fuel disc irradiation campaigns carried out in the OECD Halden BoilingWater Reactor. Usingthe multi-dimensional fuel performance code OFFBEAT, we combine 2-D axisymmetric and 3-D simulationsto investigate the effect of eccentricity on the fuel temperature distribution. At the same time, weillustrate how the advent of modern tools with multi-dimensional capabilities might further improve thedesign and interpretation of in-pile separate-effect tests and we outline the potential of such an analysisfor upcoming experiments.

#Fuel performance #Finite volume #Three-dimensional #Fuel disc irradiation #Thermomechanics #Fuel eccentricity

참고문헌 (26)

참고문헌 신청

M. D. Goldberg / 1974 / An Investigation into the Effect of Fuel Pellet Eccentricity on Fuel-Cladding Gap Heat Transfer

R. E. Williford / Effects of Fill Gas Composition and Pellet Eccentricity

Satoshi YANAGIHARA / 1982 / Effect of Fuel Pellet Eccentricity with Cladding on Fuel Rod Thermal Behavior under Reactivity Initiated Accident Condition / Journal of Nuclear Science and Technology 19(6):469~481

O. McNary / 1981 / The effect of asymmetric fuel-clad gap conductance on fuel pin thermal performance / Nuclear Engineering and Design 63(1):39~46

Paulo A.B. DeSampaio / 2013 / The effect of eccentricity in the position of UO2 pellets / Progress in Nuclear Energy 69:23~28

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