VITAS: a multi-purpose simulation code for the solution of neutron transport problems based on variational nodal methods

T Zhang, W Xiao, H Yin, Q Sun, X Liu - Annals of Nuclear Energy, 2022 - Elsevier
Existing neutronic whole-core simulation codes are problem-oriented. With the
advancement of computer technology and the development of complicated micro-nuclear …

MC/MOC two-step method for reactor physics analysis of helical cruciform fuel reactor

Q Song, R Wang, H Guo, H Gu - Progress in Nuclear Energy, 2025 - Elsevier
Helical cruciform fuel (HCF) features superior thermal conductivity, high heat transfer area-to-
volume ratio and continual mixing between channels, but its complex radial structure, axial …

TARS: A parallel tetrahedral discontinuous finite element code for the solution of the discrete ordinates neutron transport equation

G Zhang, H Zhang - Annals of Nuclear Energy, 2024 - Elsevier
In this study, we introduce TARS, a neutron transport code based on the discrete-ordinates
discontinuous finite element (SN-DFEM) method, which tackles existing challenges in the …

A low order MOC-based synthetic acceleration scheme of the MOC neutron transport method for molten salt reactors

M Dai, M Cheng - Annals of Nuclear Energy, 2024 - Elsevier
The planar method of characteristics (MOC) combined with the coarse-mesh finite difference
(CMFD) method is highly effective for solving the neutron transport equation in pressurized …

The acceleration of improved Tone's method in advanced reactor lattice neutron spectrum calculation

X Du, Y Yang, Y Zheng, Y Wang, H Wu - Progress in Nuclear Energy, 2023 - Elsevier
This paper focuses on the acceleration of solving fixed-source equations in improved Tone's
method. Since each equation is independent of the other with respect to the energy variable …

Improvement of the 3D MOC/DD neutron transport method with thin axial meshes

M Dai, A Zhang, M Cheng - Annals of Nuclear Energy, 2023 - Elsevier
Significant accuracy loss has been observed in the MOC/DD method using thin axial
meshes. A theoretical analysis indicates that the accuracy loss results from the deviation in …

Convergence analysis for the CMFD accelerated linear axial expansion transport method based on Fourier analysis

X Zhou, K Liu, H Ju, C Zhao, H Zhang… - Nuclear Science and …, 2024 - Taylor & Francis
The linear axial expansion transport method avoids the negative source problem caused by
transverse leakage in the traditional two-dimensional/one-dimensional (2D/1D) transport …

Time-dependent neutron transport method based on three-dimensional method of characteristics

Q Song, C Zhang, Y Wu, K Feng, H Guo, H Gu - Annals of Nuclear Energy, 2024 - Elsevier
Abstract The 3D Method of Characteristics (MOC) has high numerical accuracy, geometrical
flexibility, making it suitable for the simulation of advanced reactors with complex geometry …

Development of SARAX code system for full-range spectrum adaptability in advanced reactor analysis

L Wei, Y Zheng, X Du, S Liu, C Kang, Z Liu… - Annals of Nuclear …, 2022 - Elsevier
For better self-shielded cross-section generation in advanced reactor analysis with full-
range spectrum adaptability, the 2-D subassembly calculation capability has been recently …

Development and verification of an MC/MOC two-step scheme for neutronic analysis of FCM-fueled micro gas-cooled reactor

K Feng, Q Song, Y Shen, L Lou, Y Xiao, H Guo… - Annals of Nuclear …, 2025 - Elsevier
Gas-cooled microreactors are known for compact designs, high thermal-to-electric
efficiencies, long refueling cycles, and flexible deployment capabilities, representing a …