TY - GEN
T1 - Verification of the fission matrix decomposition method against two axially heterogeneous problems
AU - Terlizzi, S.
AU - Kotlyar, D.
N1 - Publisher Copyright:
© 2019 American Nuclear Society. All rights reserved.
PY - 2019
Y1 - 2019
N2 - The Fission Matrix Decomposition method (FMD) is a new computational method to solve efficiently and accurately the steady-state neutron transport equation. The method relies on the precomputation of partial fission matrices and coupling coefficients that are then combined to reconstruct the full-problem Fission Matrix (FM). In this paper, the FMD is utilized to predict the axial fission source distribution and the effective multiplication factor of two test problems: (a) the Boiling Water Reactor (BWR) unit cell with realistic void distribution and (b) the Resource-renewable Boiling Water Reactor assembly case. The FMD was able to predict k-eff withing 20 pcm and 1 pcm respectively with a mean absolute percentage error lower than 1%.
AB - The Fission Matrix Decomposition method (FMD) is a new computational method to solve efficiently and accurately the steady-state neutron transport equation. The method relies on the precomputation of partial fission matrices and coupling coefficients that are then combined to reconstruct the full-problem Fission Matrix (FM). In this paper, the FMD is utilized to predict the axial fission source distribution and the effective multiplication factor of two test problems: (a) the Boiling Water Reactor (BWR) unit cell with realistic void distribution and (b) the Resource-renewable Boiling Water Reactor assembly case. The FMD was able to predict k-eff withing 20 pcm and 1 pcm respectively with a mean absolute percentage error lower than 1%.
UR - https://www.scopus.com/pages/publications/85075397405
M3 - Conference contribution
AN - SCOPUS:85075397405
T3 - International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2019
SP - 2220
EP - 2227
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 -