强激光与粒子束2017，Vol.29Issue(4)：129-137,9.DOI:10.11884/HPLPB201729.160295
组件计算程序PANDA研发及初步验证
Development and verification for the lattice code PANDA
张宏博 1汤春桃 1杨伟焱 1毕光文 1杨波1
作者信息
摘要
Abstract
The lattice code is an important component of the nuclear design code system.It generates tabulated cross section sets for reactor neutronics calculations.The development and improvement of lattice codes are always significant topics in reactor physics.The PANDA code is a PWR lattice code developed by Shanghai Nuclear Engineering Research and Design Institute (SNERDI).In PANDA,the one-step calculation flow based on Method of Characteristics(MOC) is utilized,which means the 2D heterogeneous transport calculation is performed without any group collapse and cell homogenization.The multi-group library is processed from the evaluated nuclear data library ENDF/B-VI under a 70-group energy structure,and an improved version based on the ENDF/B-VII library is under development.The Spatially Dependent Dancoff Method (SDDM) is applied to treat the resonance self-shielding phenomena.It supports concentric sub-ring mesh divisions in a fuel pellet,but still preserves the same level of efficiency as the conventional Stamm'ler method.Modular 2D MOC with two-level Coarse Mesh Finite Difference (CMFD) acceleration is used as the heterogeneous transport solver,which has favorable accuracy and efficiency.Various matrix exponential methods are studied to solve the Bateman burnup equation.The PANDA code is developed on the basis of these methodologies.The numerical results preliminarily demonstrate that the PANDA code has the basic ability for engineering computations.关键词
组件计算/多群数据库/共振计算/特征线方法/燃耗计算/验证确认Key words
lattice calculation/multi-group library/resonance caculation/method of characteristics/depletion/V&V分类
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张宏博,汤春桃,杨伟焱,毕光文,杨波..组件计算程序PANDA研发及初步验证[J].强激光与粒子束,2017,29(4):129-137,9.
