The improved odCMFD method based on the 2D/1D Fourier analysis

Xinyu Zhou; Zhouyu Liu; Liangzhi Cao; Hongchun Wu

doi:10.1016/j.anucene.2023.109775

The improved odCMFD method based on the 2D/1D Fourier analysis

Xinyu Zhou
, Zhouyu Liu
, Liangzhi Cao
, Hongchun Wu

School of Energy and Power Engineering

Nuclear Power Institute of China
Xi'an Jiaotong University

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

The coarse mesh finite difference (CMFD) method is widely used to accelerate neutron transport calculation. The Fourier analysis shows that approximately three times of 1D inner iteration can improve the convergence and efficiency in CMFD accelerated two-dimension/one-dimension (2D/1D) neutronic transport simulation. To further enhance the convergence and efficiency of the 2D/1D neutronic transport simulation, the improved odCMFD method is studied based on the 2D/1D Fourier analysis, and the scattering ratio correction term is implemented in the improved odCMFD method. The results of the VERA benchmark and the SPEPT whole-core problem indicate that the improved odCMFD method has better convergence than the traditional odCMFD method, which is of great significance to further improve the computational efficiency of the three-dimension (3D) full core transport calculation.

Original language	English
Article number	109775
Journal	Annals of Nuclear Energy
Volume	186
DOIs	https://doi.org/10.1016/j.anucene.2023.109775
State	Published - 15 Jun 2023

Keywords

2D/1D Fourier analysis
Improved odCMFD
NECP-X
The scattering ratio correction

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10.1016/j.anucene.2023.109775

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title = "The improved odCMFD method based on the 2D/1D Fourier analysis",

abstract = "The coarse mesh finite difference (CMFD) method is widely used to accelerate neutron transport calculation. The Fourier analysis shows that approximately three times of 1D inner iteration can improve the convergence and efficiency in CMFD accelerated two-dimension/one-dimension (2D/1D) neutronic transport simulation. To further enhance the convergence and efficiency of the 2D/1D neutronic transport simulation, the improved odCMFD method is studied based on the 2D/1D Fourier analysis, and the scattering ratio correction term is implemented in the improved odCMFD method. The results of the VERA benchmark and the SPEPT whole-core problem indicate that the improved odCMFD method has better convergence than the traditional odCMFD method, which is of great significance to further improve the computational efficiency of the three-dimension (3D) full core transport calculation.",

keywords = "2D/1D Fourier analysis, Improved odCMFD, NECP-X, The scattering ratio correction",

author = "Xinyu Zhou and Zhouyu Liu and Liangzhi Cao and Hongchun Wu",

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doi = "10.1016/j.anucene.2023.109775",

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TY - JOUR

T1 - The improved odCMFD method based on the 2D/1D Fourier analysis

AU - Zhou, Xinyu

AU - Liu, Zhouyu

AU - Cao, Liangzhi

AU - Wu, Hongchun

PY - 2023/6/15

Y1 - 2023/6/15

N2 - The coarse mesh finite difference (CMFD) method is widely used to accelerate neutron transport calculation. The Fourier analysis shows that approximately three times of 1D inner iteration can improve the convergence and efficiency in CMFD accelerated two-dimension/one-dimension (2D/1D) neutronic transport simulation. To further enhance the convergence and efficiency of the 2D/1D neutronic transport simulation, the improved odCMFD method is studied based on the 2D/1D Fourier analysis, and the scattering ratio correction term is implemented in the improved odCMFD method. The results of the VERA benchmark and the SPEPT whole-core problem indicate that the improved odCMFD method has better convergence than the traditional odCMFD method, which is of great significance to further improve the computational efficiency of the three-dimension (3D) full core transport calculation.

AB - The coarse mesh finite difference (CMFD) method is widely used to accelerate neutron transport calculation. The Fourier analysis shows that approximately three times of 1D inner iteration can improve the convergence and efficiency in CMFD accelerated two-dimension/one-dimension (2D/1D) neutronic transport simulation. To further enhance the convergence and efficiency of the 2D/1D neutronic transport simulation, the improved odCMFD method is studied based on the 2D/1D Fourier analysis, and the scattering ratio correction term is implemented in the improved odCMFD method. The results of the VERA benchmark and the SPEPT whole-core problem indicate that the improved odCMFD method has better convergence than the traditional odCMFD method, which is of great significance to further improve the computational efficiency of the three-dimension (3D) full core transport calculation.

KW - 2D/1D Fourier analysis

KW - Improved odCMFD

KW - NECP-X

KW - The scattering ratio correction

UR - https://www.scopus.com/pages/publications/85149324933

U2 - 10.1016/j.anucene.2023.109775

DO - 10.1016/j.anucene.2023.109775

M3 - 文章

AN - SCOPUS:85149324933

SN - 0306-4549

VL - 186

JO - Annals of Nuclear Energy

JF - Annals of Nuclear Energy

M1 - 109775

ER -

The improved odCMFD method based on the 2D/1D Fourier analysis

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Keywords

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