堆内构件正方形布置开圆孔平板结构辐照效应温升半解析解  

Semi-Analytical Solution of Temperature Rise Caused by Irradiation Effect for Perforated Plates with Square Penetration Patterns in Reactor Vessel Internals

作　　者：林炳炽 徐晓 孔小飞 刘攀 金挺 聂照宇 鲁治诚 姚博维 Lin Bingchi;Xu Xiao;Kong Xiaofei;Liu Pan;Jin Ting;Nie Zhaoyu;Lu Zhicheng;Yao Bowei(State Key Laboratory of Nuclear Power Safety Technology and Equipment,China Nuclear Power Engineering Co.,Ltd.,Shenzhen,Guangdong,518172,China)

机构地区：[1]中广核工程有限公司核电安全技术与装备全国重点实验室,广东深圳518172

出　　处：《核动力工程》2024年第4期96-102,共7页Nuclear Power Engineering

摘　　要：压水堆堆内构件中存在较厚的多孔板结构,其辐照效应带来的温升比较显著。由于结构的复杂性,其温升一般通过有限元方法计算得到。针对堆内构件正方形布置开圆孔平板结构,本文采用半解析方法计算其在辐照效应下的最大温升,得到了该结构的温升计算公式,并将其计算结果与有限元结果进行对比,结果表明:当γ释热率峰值的径向范围大于4倍孔心间距时,公式计算的最大温升与有限元结果偏差在2%以内,且公式计算的最大温升所在位置厚度方向的温度分布与有限元结果比较吻合。In Reactor Vessel Internals(RVI),the temperature rise caused by the irradiation effect is significant for the thick perforated plates.Due to the complexity of the structure,its temperature rise is generally calculated by finite element method.In this paper,the semi-analytical method is used to calculate the maximum temperature rise of the perforated plate with square penetration patterns under irradiation effect.The calculation formula of the temperature rise of the structure is obtained,and the calculation results are compared with the finite element results.The results show that the deviation between the maximum temperature rise calculated by the formula and the finite element results is less than 2%when the radial range of the peak value ofγheat release rate is greater than 4 times the spacing between holes,and the temperature distribution in the thickness direction where the maximum temperature rise is calculated by the formula is in good agreement with the finite element results.

关 键 词：辐照效应 堆内构件 多孔板 温升 半解析解 

分 类 号：TL351.1[核科学技术—核技术及应用]