Analysis of the applicability of acceleration methods for a triangular prism geometry nodal diffusion code

Fujimura, Toichiro*; Okumura, Keisuke

JAERI-Research 2002-024, 27 Pages, 2002/11

JAERI-Research-2002-024.pdf:1.04MB

A prototype version of a diffusion code has been developed to analyze the hexagonal core as reduced moderation reactor and the applicability of some acceleration methods have been investigated to accelerate the convergence of the iterative solution method. The hexagonal core is divided into regular triangular prisms in the three-dimensional code MOSRA-Prism and a polynomial expansion nodal method is applied to approximate the neutron flux distribution by a cubic polynomial. The multi-group diffusion equation is solved iteratively with ordinal inner and outer iterations and the effectiveness of acceleration methods is ascertained by applying an adaptive acceleration method and a neutron source extrapolation method, respectively. The formulation of the polynomial expansion nodal method is outlined in the report and the local and global effectiveness of the acceleration methods is discussed with various sample calculations. A new general expression of vacuum boundary condition, derived in the formulation is also described.

A double finite element method with accurate reflective boundary condition treatment for three-dimensional transport

Fujimura, Toichiro

Computer Physics Communications, 82, p.111 - 119, 1994/00

https://doi.org/10.1016/0010-4655(94)90160-0

no abstracts in English

An Algorithm for Solving Three-Dimensional Neutron Transport Problems by the Galerkin-Type Double Finite Element Method

; *;

JAERI-M 83-144, 40 Pages, 1983/09

JAERI-M-83-144.pdf:0.96MB

no abstracts in English

Manual for JSSL(JAERI Scientific Subroutine Library)

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JAERI-M 82-095, 238 Pages, 1982/09

JAERI-M-82-095.pdf:4.77MB

no abstracts in English

DEPRI, DEPRIM: Programs for Solving Large Linear Optimization Problems by Decomposition Principle

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JAERI-M 9315, 33 Pages, 1981/02

JAERI-M-9315.pdf:0.95MB

no abstracts in English

A Program Package for Soluing Nonlinear Optimization Problems : User's Manual

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JAERI-M 9154, 79 Pages, 1980/11

JAERI-M-9154.pdf:2.81MB

no abstracts in English

Manual on JSSL (JAERI Scientific Subroutine Library) (2nd Edition)

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JAERI-M 8479, 266 Pages, 1979/11

JAERI-M-8479.pdf:5.44MB

no abstracts in English

Development and Adjustment of Progams for Solving Systems of Linear Equations; Development and Benchmark Test of SSL,No.4

JAERI-M 7553, 28 Pages, 1978/03

JAERI-M-7553.pdf:0.98MB

no abstracts in English

Benchmark tests of radiation transport computer codes for reactor core and shield calculations

; *; *; *; *; *; ; *; ; ; et al.

Journal of Nuclear Science and Technology, 15(1), p.56 - 71, 1978/01

https://doi.org/10.3327/jnst.15.56

no abstracts in English

A User's Manual for JSSL(JAERI Scientific Subroutine Library)

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JAERI-M 7102, 138 Pages, 1977/05

JAERI-M-7102.pdf:2.87MB

no abstracts in English