Convergence study of traditional 2D/1D coupling method for k-eigenvalue neutron transport problems with Fourier analysis

Kong Boran; Zhu Kaijie; Zhang Han; Hao Chen; Guo Jiong; Li Fu

doi:10.1016/j.net.2022.12.034

추천

검색

자료유형: 학술저널

저자정보: Kong Boran (Tsinghua University) Zhu Kaijie (Tsinghua University) Zhang Han (Fundamental Science on Nuclear Safety and Simulation Technology Laboratory Harbin Engineering University) Hao Chen (Fundamental Science on Nuclear Safety and Simulation Technology Laboratory Harbin Engineering University) Guo Jiong (Tsinghua University) Li Fu (Tsinghua University)

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제55권 제4호

발행연도: 2023.4

수록면: 1,350 - 1,364 (15page)

DOI: 10.1016/j.net.2022.12.034

이용수

📌

연구주제

📖

연구배경

🔬

연구방법

🏆

연구결과

초록· 키워드

오류제보하기

2D/1D coupling method is an important neutron transport calculation method due to its high accuracy and relatively low computation cost. However, 2D/1D coupling method may diverge especially in small axial mesh size. To analyze the convergence behavior of 2D/1D coupling method, a Fourier analysis for k-eigenvalue neutron transport problems is implemented. The analysis results present the divergence problem of 2D/1D coupling method in small axial mesh size. Several common attempts are made to solve the divergence problem, which are to increase the number of inner iterations of the 2D or 1D calculation, and two times 1D calculations per outer iteration. However, these attempts only could improve the convergence rate but cannot deal with the divergence problem of 2D/1D coupling method thoroughly. Moreover, the choice of axial solvers, such as DGFEM SN and traditional SN, and its effect on the convergence behavior are also discussed. The results show that the choice of axial solver is a key point for the convergence of 2D/1D method. The DGFEM SN based 2D/1D method could converge within a wide range of optical thickness region, which is superior to that of traditional SN method.

#Convergence study #2D/1D coupling method #Fourier analysis #Divergence problem #Two SN sweepings

참고문헌 (0)

참고문헌 신청

참고문헌이 DBpia에서 서비스 중이라면, [참고문헌 신청]을 통해 등록해보세요

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!