原子能科学技术2018，Vol.52Issue(1)：48-55,8.DOI:10.7538/yzk.2017.youxian.0200
均匀加热全长棒束过冷沸腾工况子通道参数场计算分析
Parameter Analysis among Sub-channels of Subcooled Flow Boiling in Full Scale Bundle with Uniform-APD
摘要
Abstract
Subcooled boiling heat transfer simulation of PSBT full scale 5 × 5 rod bundle with uniform-axial power distribution (APD) was carried out with wall heat flux parti-tion method . Axial sub-channel averaged parameter analysis along axial orientation among different sub-channels was studied .It is found that lower mixing effect ,ob-served in corner and lateral sub-channels ,makes negative contribution to heat transfer . But this effect is eliminated due to the lower power of cold rod (CR) .The difference of parameter distribution is found among sub-channels . The mixing process among sub-channels in the central diagonal of mixing is strengthened due to the sustaining trans-verse flow induced by the vanes ,which leads to an increasing heat transfer in these sub-channels .In the corner sub-channels ,notable difference is observed .The wall super-heat of hot-rod (HR) is higher than that of the CR .The HRs ,which locate outside of the central diagonal of mixing ,have a higher wall superheat than other HRs .关键词
PSBT/全长棒束/均匀加热/子通道/参数分布Key words
PSBT/full scale bundle/uniform-APD/sub-channel/parameter distribu-tion分类
能源科技引用本文复制引用
张君毅,闫晓,肖泽军,徐建军,刘文兴..均匀加热全长棒束过冷沸腾工况子通道参数场计算分析[J].原子能科学技术,2018,52(1):48-55,8.基金项目
国家自然科学基金资助项目(11475161,51406189) （11475161,51406189）
OECD/NEA及JNES基金资助项目 （）
