Study on Multiphysics Coupling and Automatic Neutronic Optimization for Solid Tritium Breeding Blanket of Fusion Reactor

Shen Qu, Qixiang Cao, Xuru Duan, Xueren Wang and Xiaoyu Wang
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Shen Qu: Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
Qixiang Cao: Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
Xuru Duan: Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
Xueren Wang: Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
Xiaoyu Wang: Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China

Energies, 2021, vol. 14, issue 17, 1-14

Abstract: A tritium breeding blanket (TBB) is an essential component in a fusion reactor, which has functions of tritium breeding, energy generation and neutron shielding. Tritium breeding ratio (TBR) is a key parameter to evaluate whether the TBB could produce enough tritium to achieve tritium self-sufficiency (TBR > 1) for a fusion reactor. Current codes or software struggle to meet the requirements of high efficiency and high automation for neutronic optimization of the TBB. In this paper, the multiphysics coupling and automatic neutronic optimization method study for a solid breeder TBB is performed, and a corresponding code is developed. A typical module of China fusion engineering test reactor (CFETR) helium cooled ceramic breeder (HCCB) TBB was selected, and a 3D neutronics model of an initial scheme is developed. The automatic neutronic optimization was performed by using the developed code for verification. Results indicate that the TBR could increase from 1.219 to 1.282 (~5.17% improvement), and that the maximum temperature of each type of material in the optimized scheme is below the allowable temperature. It is of great scientific significance and engineering value to explore and study the algorithm for automatic neutronic optimization and the code development of the TBB.

Keywords: multiphysics coupling; automatic neutronic optimization; HCCB TBB; TBR (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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