TY - GEN
T1 - Research on acceleration of ultra-fine-group calculation based on method of characteristic
AU - Qin, Shuai
AU - Zhang, Qian
AU - Zhao, Qiang
AU - Liang, Liang
AU - Wu, Hongchun
AU - Cao, Lu
N1 - Publisher Copyright:
© 2018-2019 by JSME
PY - 2019/5/18
Y1 - 2019/5/18
N2 - Ultra-fine-group slowing down equation solved by method of characteristic (UFG-MOC method) is capable of performing the rigorous self-shielding calculation of complicated geometry and complicated neutron spectrum problems. Compared with the conventional ultra-fine-group code with pin-cell geometry and collision probability pre-tabulation, the UFG-MOC method is more flexible in the geometry processing, but it is inefficient since tens of thousands of fixed-source calculations are performed. In this study, some strategies are discussed to decrease the number of fixed-source calculation and the corresponding acceleration scheme is proposed. Numerical results show that the acceleration scheme can effectively reduce the computational time without the impact of accuracy compared with the original UFG-MOC method.
AB - Ultra-fine-group slowing down equation solved by method of characteristic (UFG-MOC method) is capable of performing the rigorous self-shielding calculation of complicated geometry and complicated neutron spectrum problems. Compared with the conventional ultra-fine-group code with pin-cell geometry and collision probability pre-tabulation, the UFG-MOC method is more flexible in the geometry processing, but it is inefficient since tens of thousands of fixed-source calculations are performed. In this study, some strategies are discussed to decrease the number of fixed-source calculation and the corresponding acceleration scheme is proposed. Numerical results show that the acceleration scheme can effectively reduce the computational time without the impact of accuracy compared with the original UFG-MOC method.
KW - Acceleration Strategy
KW - Fixed-source Calculation
KW - Method of Characteristic
KW - Self-shielding Calculation
KW - Ultra-fine-group
UR - https://www.scopus.com/pages/publications/85071360711
M3 - 会议稿件
AN - SCOPUS:85071360711
T3 - International Conference on Nuclear Engineering, Proceedings, ICONE
BT - Proceedings of the 27th International Conference on Nuclear Engineering, ICONE 2019 - "Nuclear Power Saves the World!"
PB - American Society of Mechanical Engineers (ASME)
T2 - 27th International Conference on Nuclear Engineering: Nuclear Power Saves the World!, ICONE 2019
Y2 - 19 May 2019 through 24 May 2019
ER -