Verification of the Discrete Ordinates Goal-Oriented Multi-Collision Source Algorithm with Neutron Streaming Problems

Xinyu Wang, Bin Zhang (), Yixue Chen and Jun Xiong
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Xinyu Wang: School of Nuclear Science and Engineering, North China Electric Power University, Beijing 102206, China
Bin Zhang: School of Nuclear Science and Engineering, North China Electric Power University, Beijing 102206, China
Yixue Chen: School of Nuclear Science and Engineering, North China Electric Power University, Beijing 102206, China
Jun Xiong: State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment, Shenzhen 518172, China

Energies, 2022, vol. 15, issue 22, 1-13

Abstract: The shielding calculation of neutron streaming problems with ducts is characterized by the strong anisotropy of angular flux, which poses a challenge for the analysis of nuclear installations. The discrete ordinate method is one of the most commonly deterministic techniques to solve the neutron transport equation, in which the accuracy and efficiency neutron are crucial to ensure the reliability of the streaming shielding simulation. We implemented the goal-oriented multi-collision source algorithm in the 3D transport code ARES. This algorithm can determine the importance factor based on the adjoint transport calculation, obtain the response function to enable problem-dependent, goal-oriented spatial decomposition, and provide the error estimation as a driving force behind the dynamic quadrature to optimize the source iteration. This study focuses on verifying the goal-oriented multi-collision source algorithm under the neutron streaming problems, and the capabilities of the algorithm have been tested on IRI-TUB benchmark of SINBAD database. The numerical results show that the algorithm can effectively control the angular discretization error for the neutron streaming problems, which is more economical than the traditional discrete ordinate calculation.

Keywords: shielding calculation; neutron streaming; discrete ordinates method; multi-collision source; goal-oriented (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: 2022
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