1. NAME AND TITLE
FEMRZ: A Finite-Element Method Two-Dimensional Multigroup Neutron Transport Code System, (r,z) Geometry.
2. CONTRIBUTOR
Japan Atomic Energy Research Institute, Tokai, Ibaraki, Japan.
3. CODING LANGUAGE AND COMPUTER
Fortran IV; FACOM 230-75.
4. NATURE OF PROBLEM SOLVED
FEMRZ is a computer program based on the finite element method which has been developed for solving multi group neutron transport problems in two-dimensional cylindrical (r,z) geometry. It can solve not only eigenvalue problems but also other problems, such as fixed source problems.
5. METHOD OF SOLUTION
In the solution algorithm, the method of higher order finite elements is applied to the spatial variables on rectangular (r,z) subregions. It is based on the discontinuous method with a Galerkin-type scheme. The discrete ordinate Sn method is used for the angular variables.
6. RESTRICTIONS OR LIMITATIONS
No restrictions have been noted except for the computer size.
7. TYPICAL RUNNING TIME
A three-group, S4, 4 × 3 mesh point, second order approximation, keff calculation requires about 0.1 minutes of FACOM 230-75 time.
8. COMPUTER HARDWARE REQUIREMENTS
FEMRZ is designed to operate on the FACOM 230-75 computer. It requires a minimum of 64 K words.
9. COMPUTER SOFTWARE REQUIREMENTS
A variable dimension Fortran IV compiler and a standard FACOM Monitor-VII are required.
10. REFERENCE
T. Fujimura, T. Tsutsui, K. Horikami, T. Ohnishi, and Y. Nakahara, "FEMRZ, Program for Solving Two-Dimensional Neutron Transport Problems in Cylindrical Geometry by the Finite Element Method," JAERI 1253 (February 1978).
11. CONTENTS OF CODE PACKAGE
Included are the referenced document and one (1.2MB) DOS diskette which contains the source codes and sample problem input and output.
12. DATE OF ABSTRACT
January 1982.
KEYWORDS: TWO-DIMENSIONS; CYLINDRICAL GEOMETRY; FINITE ELEMENT METHOD; MULTIGROUP; DISCRETE ORDINATES; NEUTRON