子通道分析软件LINDEN的全堆芯pin-by-pin计算功能开发及应用  

Development and Application of Core pin-by-pin Calculation of Sub-channel Analysis Code LINDEN

作　　者：夏航 许荣栓 厉井钢 巫英伟[2] 王婷 朱元兵 王可 Xia Hang;Xu Rongshuan;Li Jinggang;Wu Yingwei;Wang Ting;Zhu Yuanbing;Wang Ke(China Nuclear Power Technology Research Institute Co.,Ltd.,Shenzhen,Guangdong,518028,China;School of Nuclear Science and Technology,Xi’an Jiaotong University,Xi’an,710049,China)

机构地区：[1]中广核研究院有限公司,广东深圳518028 [2]西安交通大学核科学与技术学院,西安710049

出　　处：《核动力工程》2024年第1期72-78,共7页Nuclear Power Engineering

摘　　要：为实现子通道分析软件LINDEN的pin-by-pin计算功能,提高LINDEN软件开展堆芯热工水力分析的计算精度。本研究开发了全堆芯pin-by-pin计算自动建模功能,解决了大型稀疏矩阵的存储和求解问题,开展了157组件反应堆全堆芯pin-by-pin计算及分析。计算结果表明,LINDEN软件可以开展全堆芯pin-by-pin计算,获得堆芯内冷却剂温度分布、偏离泡核沸腾比(DNBR)、质量流速分布等关键热工水力参数的详细分布结果。相邻组件的功率差异会影响组件内的热工水力参数分布。To realize the pin by pin calculation function of the sub-channel analysis code LINDEN and improve the accuracy of core thermal hydraulic analysis by LINDEN code,an automatic modeling function has been developed for the full core pin-by-pin calculation,and the storage and solution problems of large sparse matrices have been solved.The full core pin-by-pin calculation and analysis of 157 assemblies were carried out.The calculation results indicate that LINDEN can perform full core pin-by-pin calculations,and the detailed distribution results of key thermal hydraulic parameters such as coolant temperature distribution,DNBR,mass flow rate distribution can be obtained.The power difference between adjacent assemblies affects the distribution of thermal hydraulic parameters within the assembly.

关 键 词：子通道分析 自动建模 大型稀疏矩阵 pin-by-pin 

分 类 号：TL33[核科学技术—核技术及应用]