TY - GEN
T1 - NECP-X/SUBSC solutions to vera core physics benchmark progression problems 6 and 7
AU - Chen, Jim
AU - Cao, Liangzhi
AU - Liu, Zhouyu
AU - Zhao, Chen
AU - Wu, Hongchun
N1 - Publisher Copyright:
© 2018 International Conference on Physics of Reactors, PHYSOR 2018: Reactor Physics Paving the Way Towards More Efficient Systems. All rights reserved.
PY - 2018
Y1 - 2018
N2 - Previous work reported the development of NECP-X/SUBSC via an internal coupling method by integrating the in-house subchannel code SUBSC into the newly developed high-fidelity neutronics code NECP-X. However, when applying NECP-X/SUBSC to VERA Core Physics Benchmark Progression Problem 7 (VERA #7) on Tianhe-2 supercomputer, due to different parallel performance of the two codes, the computational resource will be wasted. Therefore, an external coupling method via Python script was developed. An effective relaxation method was adopted to improve the coupling convergence behavior. Excellent speed-up was demonstrated by applying NECP-X/SUBSC to VERA Core Physics Benchmark Progression Problem 6 (VERA #6). Radial reflector sensitivity study was performed to find the best radial model which has the good balance between accuracy and efficiency. With the best radial model, NECP-X/SUBSC was applied to VERA #7, Watts Bar Unit 1 at the beginning of cycle (BOC) with hot full power (HFP).
AB - Previous work reported the development of NECP-X/SUBSC via an internal coupling method by integrating the in-house subchannel code SUBSC into the newly developed high-fidelity neutronics code NECP-X. However, when applying NECP-X/SUBSC to VERA Core Physics Benchmark Progression Problem 7 (VERA #7) on Tianhe-2 supercomputer, due to different parallel performance of the two codes, the computational resource will be wasted. Therefore, an external coupling method via Python script was developed. An effective relaxation method was adopted to improve the coupling convergence behavior. Excellent speed-up was demonstrated by applying NECP-X/SUBSC to VERA Core Physics Benchmark Progression Problem 6 (VERA #6). Radial reflector sensitivity study was performed to find the best radial model which has the good balance between accuracy and efficiency. With the best radial model, NECP-X/SUBSC was applied to VERA #7, Watts Bar Unit 1 at the beginning of cycle (BOC) with hot full power (HFP).
KW - Coupled neutronics thermal hydraulics
KW - NECP-X
KW - SUBSC
UR - https://www.scopus.com/pages/publications/85106030240
M3 - 会议稿件
AN - SCOPUS:85106030240
T3 - International Conference on Physics of Reactors, PHYSOR 2018: Reactor Physics Paving the Way Towards More Efficient Systems
SP - 3437
EP - 3447
BT - International Conference on Physics of Reactors, PHYSOR 2018
PB - Sociedad Nuclear Mexicana, A.C.
T2 - 2018 International Conference on Physics of Reactors: Reactor Physics Paving the Way Towards More Efficient Systems, PHYSOR 2018
Y2 - 22 April 2018 through 26 April 2018
ER -