哈尔滨工程大学学报2024，Vol.45Issue(12)：2304-2311,8.DOI:10.11990/jheu.202411017
基于多级加速的堆芯瞬态计算软件的开发与验证
Development and verification of PWR core physical transient calculation software based on multilevel acceleration theory
吴东阳 1郝琛 1徐宁 1王毅箴 1尹文1
作者信息
- 1. 哈尔滨工程大学 核科学与技术学院,黑龙江 哈尔滨 150001
- 折叠
摘要
Abstract
A transient diffusion calculation program based on multilevel acceleration theory is developed to perform core physics calculations more rapidly while ensuring accuracy.The steady-state calculation module adopts the nod-al expansion method within the framework of gCMFD,and the transient calculation module is developed on this foundation.The program uses the first-order backward Euler method to process the time derivative term and incor-porates the multilevel acceleration theory using the one group gCMFD method to further improve transient calcula-tion efficiency.Meanwhile,the flux-volume weighted method is used to correct the rod cusping effect.The program is verified using the 2D TWIGL transient benchmark problem and the 3D LMW transient benchmark problem.Re-sults reveal that the relative difference in normalized core power between the results calculated by the program de-veloped in this study and the benchmark remains within 1%,whereas the calculation time is reduced by nearly 60%when multilevel acceleration is adopted.The use of multilevel PCQM can shorten the calculation time and improve computation efficiency while ensuring accuracy.The correction of the rod cusping effect improves the calculation re-sults and reduces errors caused by node homogenization.关键词
堆芯物理计算/多级加速理论/中子扩散/瞬态/节块展开法/标准预估-校正准静态方法/多级预估-校正准静态方法/尖端效应Key words
core physics calculation/multilevel acceleration theory/neutron diffusion/transient/nodal expansion method/standard predictor-correction quasi-static method/multilevel predictor-correction quasi-static method/rod cusping effect分类
能源科技引用本文复制引用
吴东阳,郝琛,徐宁,王毅箴,尹文..基于多级加速的堆芯瞬态计算软件的开发与验证[J].哈尔滨工程大学学报,2024,45(12):2304-2311,8.
