TY - GEN
T1 - Application of the super-homogenization method in fast reactor analysis system SARAX
AU - Wei, Linfang
AU - Zheng, Youqi
AU - Xiao, Bowen
AU - Xu, Longfei
AU - Wu, Hongchun
N1 - Publisher Copyright:
© 2019 American Nuclear Society. All rights reserved.
PY - 2019
Y1 - 2019
N2 - For better estimation of few-group cross-section considering heterogeneous effect during subassembly homogenization in fast reactor analysis, especially in the multi-region system, the traditional spatial SuPer-Homogenization (SPH) method was implemented in the fewgroup cross-section generation module, named TULIP, in the SARAX system to preserve the reaction rate conservation during spatial homogenization. Recently, the Energy-collapsing SuPer-Homogenization (ESPH) method was introduced in the new TULIP module to obtain the multigroup-fewgroup equivalence during group condensation. Using ESPH method, the infinite multiplication factor and the region-wise reaction rate of subassembly calculation were strictly conserved before and after energy collapsing. Besides, this paper also provides another way to generate few-group cross-section by using a whole core spectrum when condensing, in which the ESPH method was also used.
AB - For better estimation of few-group cross-section considering heterogeneous effect during subassembly homogenization in fast reactor analysis, especially in the multi-region system, the traditional spatial SuPer-Homogenization (SPH) method was implemented in the fewgroup cross-section generation module, named TULIP, in the SARAX system to preserve the reaction rate conservation during spatial homogenization. Recently, the Energy-collapsing SuPer-Homogenization (ESPH) method was introduced in the new TULIP module to obtain the multigroup-fewgroup equivalence during group condensation. Using ESPH method, the infinite multiplication factor and the region-wise reaction rate of subassembly calculation were strictly conserved before and after energy collapsing. Besides, this paper also provides another way to generate few-group cross-section by using a whole core spectrum when condensing, in which the ESPH method was also used.
KW - Fast reactor
KW - Few-group cross-section
KW - SARAX
KW - SuPer-Homogenization
UR - https://www.scopus.com/pages/publications/85075360928
M3 - 会议稿件
AN - SCOPUS:85075360928
T3 - International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2019
SP - 578
EP - 587
BT - International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2019
PB - American Nuclear Society
T2 - 2019 International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2019
Y2 - 25 August 2019 through 29 August 2019
ER -