DRAGON程序在压水堆燃料栅元计算中的研究  

Study on the DRAGON Code in PWR Fuel Cell Calculation

作　　者：吴军[1] 肖向 陈义学[1] WU Jun;XIAO Xiang;CHEN Yixue(School of Nuclear science and Engineering,North China Electric Power University,Beijing 102206,China;Department of Engineering Physics,Tsinghua University,Beijing 100084,China)

机构地区：[1]华北电力大学核科学与工程学院,北京102206 [2]清华大学工程物理系,北京100084

出　　处：《核科学与工程》2023年第4期743-750,共8页Nuclear Science and Engineering

摘　　要：在压水堆核设计中,不同的输运计算方法、共振自屏计算方法和多群截面库会对最终的反应性精度造成较大的影响,所以需要针对不同的组合方式进行研究,从而得到精度最高的组合。因此,本文以压水堆常见的燃料栅元为研究对象,利用DRAGON程序中自带的不同输运计算方法(界面流/碰撞概率方法)、共振自屏计算方法(等价理论/子群方法)和多群截面库(DRAG-281/WIMS-D 281)进行计算,并将结果与蒙卡程序进行对比。通过一系列压水堆算例进行测试,结果发现碰撞概率方法、子群方法和DRAG-281库在压水堆燃料栅元计算中精度较高,而界面流方法、等价理论与WIMS-D 281库匹配性较好,整体精度较高。In PWR calculation,the different transport calculation method,resonance self-shielding calculation method and multi-group cross section library can influence the accuracy in reactivity predictions.It is important to analyze the different combinations between them and select the best combinations way.Hence,the transport calculation method(interface current method and collision probability method),the resonance self-shielding calculation method(equivalence theory and subgroup method)and the multi-group cross section library(DRAG-281 and WIMS-D 281)are used in the DRAGON code.The results of different PWR cases are then compared with the Monte-Carlo code.It indicates that the collision probability method,subgroup method with DRAG-281 library.The interface current method and equivalence theory with WIMS-D 281 library is more accurate.

关 键 词：DRAGON 输运计算方法 共振计算方法 多群截面库 

分 类 号：TL329[核科学技术—核技术及应用]