轻水堆物理组件计算程序

The Codes of Assembly Calculation for Light Water Reactor Nuclear Design

对于堆物理工程设计中常用的碰撞几率程序CPXY和两维S_N计算程序DOT3.5,以及最近研制的穿透几率程序TPXY,本文简述了其理论模型,并着重就它们的计算精度,计算时间和网格的划分,进行了系统的数值研究。所计算分析的组件基准问题和例题,复盖了目前PWR和BWR堆芯组件的几何结构和核不均匀性。研究结果表明,穿透几率程序TPXY是当前工程上实用的计算效率最高的组件计算程序。

The theoretical model of the collision probability code CPXY and the transmission probability code TPXY are diseribed in this paper. CPXY code has been used in the reactor nuclear design.TPXY code recently was developed.Their accuracy, computer time and mesh size were investigated emphatically. The assembly benchmark problems and examples covered the present PWR and BWR core assemblies.Results show that the transmission probability code TPXY is the most efficient code for engineering design.