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JAEA Reports

Development of neutron transport calculation codes for 3-D hexagonal geometry, 2; Improvement and enhancement of the MINISTRI code

Sugino, Kazuteru; Takino, Kazuo

JAEA-Data/Code 2019-011, 110 Pages, 2020/01

JAEA-Data-Code-2019-011.pdf:3.37MB

A deterministic discrete ordinates method (SN method) transport calculation code for three-dimensional hexagonal geometry has been developed as the MINISTRI code (Ver. 7.0). MINISTRI is based on the triangle-mesh finite difference method, which can perform neutron transport calculations with high accuracy for cores of fast power reactors and assemblies of the Russian BFS critical facility. The present study has derived a proper scheme for remarkably improving the convergence of MINISTRI by investigating the issue of previous MINISTRI (Ver. 1.1), which sometimes plays a poor convergence performance in calculations for large-scale power reactor cores. The verification test of improved MINISTRI has been carried out for various cores by setting the reference result as the multi-group Monte-Carlo calculation with the same cross-sections as used in MINISTRI. As a result, it is found that the agreements are within 0.1% for eigenvalues and within 0.7% for power distributions. Thus, the satisfying accuracy of MINISTRI has been confirmed. In order to reduce the calculation time, the initial diffusion calculation scheme and the parallel processing have been implemented. As a result, the calculation time is reduced to the approximately one tenth compared with previous MINISTRI. Furthermore, adoption of the treatment of the anisotropic cell streaming effect, preparation of the perturbation calculation tool, implementation of the function for specification of the triangle-mesh-wise material and merging of the hexagonal-mesh calculation code MINIHEX have been carried out. Thus, the versatility of MINISTRI has been enhanced.

Journal Articles

A New scheme for inner layer equations in resistive MHD stability theory of plasmas

Tokuda, Shinji

Purazuma, Kaku Yugo Gakkai-Shi, 77(3), p.276 - 283, 2001/03

no abstracts in English

Journal Articles

Stability simulation of a cable-in-conduit conductor on a non-uniform mesh

Koizumi, Norikiyo; *; Takahashi, Yoshikazu; Tsuji, Hiroshi

IEEE Transactions on Applied Superconductivity, 7(2), p.219 - 222, 1997/06

 Times Cited Count:2 Percentile:29.64(Engineering, Electrical & Electronic)

no abstracts in English

Journal Articles

Development of a numerical solution method for advection terms and its application to atmospheric dynamic model, PHYSIC

Yamazawa, Hiromi

Journal of Nuclear Science and Technology, 33(1), p.69 - 77, 1996/01

 Times Cited Count:4 Percentile:40.29(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Development of MINCS code for evaluation of two-phase flow models

Watanabe, Tadashi; Hirano, Masashi;

Journal of Nuclear Science and Technology, 30(10), p.1078 - 1083, 1993/10

 Times Cited Count:0 Percentile:0.01(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Boundary element methods applied to two-dimensional neutron diffusion problems

Journal of Nuclear Science and Technology, 22(7), p.565 - 583, 1985/00

 Times Cited Count:37 Percentile:95.51(Nuclear Science & Technology)

no abstracts in English

JAEA Reports

Journal Articles

Vectorization of finite-difference method

; *

Joho Shori Gakkai Rombunshi, 24(1), p.8 - 14, 1983/00

no abstracts in English

JAEA Reports

Matrix method for kinetic ballooning mode

; ; ; *

JAERI-M 82-080, 18 Pages, 1982/07

JAERI-M-82-080.pdf:0.52MB

no abstracts in English

Journal Articles

A New mixed method with finite difference and finite element method for neutron diffusion calculation

; *; *

Journal of Nuclear Science and Technology, 18(8), p.571 - 580, 1981/00

 Times Cited Count:5 Percentile:58.52(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Application of finite element method to two-dimensional multi-group neutron transport equation in cylindrical geometry

; ; ; ; *

Journal of Nuclear Science and Technology, 14(8), p.541 - 550, 1977/08

 Times Cited Count:3

no abstracts in English

Oral presentation

Dense GNSS observation at an active shear zone in southern Kyushu, southwest Japan

Watanabe, Tsuyoshi; Asamori, Koichi

no journal, , 

no abstracts in English

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