Time-dependent neutron transport method based on three-dimensional method of characteristics

被引：1
|
作者：
Song, Qufei [1 ]
Zhang, Chang [1 ]
Wu, Yiwei [1 ]
Feng, Kuaiyuan [1 ]
Guo, Hui [1 ]
Gu, Hanyang [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Nucl Sci & Engn, Shanghai, Peoples R China
来源：
ANNALS OF NUCLEAR ENERGY | 2024年 / 199卷
基金：
中国国家自然科学基金;
关键词：
Neutron transport; Method of characteristics; OpenMOC; Transient; QUASI-STATIC METHOD; TRANSIENT ANALYSIS; BENCHMARK; ACCURACY;
D O I：
10.1016/j.anucene.2023.110334
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
The 3D Method of Characteristics (MOC) has high numerical accuracy, geometrical flexibility, making it suitable for the simulation of advanced reactors with complex geometry, while the development of transient solvers based on it is still relatively limited. In this work, transient method was developed based on 3D MOC solvers of OpenMOC and predictor-corrector quasi -static method and the C5G7-TD benchmark problems were used to verify the implementation. In 2D cases and 3D moderator density change cases, the results of OpenMOC were in good agreement with the results of other transient codes. In 3D control rods movement cases, there are oscillation errors between the existing results of different transient codes due to the control rod cusping effect. This work is based on the refined axial modeling of 3D MOC, which avoids the cusping effect and provides new results of C5G7-TD benchmark.
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页数：13
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