Computer Programs

NEA-0545 FEM-BABEL.

NEA-0545 FEM-BABEL.

FEM-BABEL, 3-D MultiGroup Neutron Diffusion by Galerkin Method

NAME OR DESIGNATION OF PROGRAM, COMPUTER, NATURE OF PHYSICAL PROBLEM SOLVED, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, FEATURES, AUXILIARIES, STATUS, REFERENCES, REQUIREMENTS, LANGUAGE, OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED, ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: FEM-BABEL.

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2. COMPUTERS

To submit a request, click below on the link of the version you wish to order. Rules for end-users are available here.

Program name	Package id	Status	Status date
FEM-BABEL	NEA-0545/01	Tested	01-APR-1980

Machines used:

Package ID	Orig. computer	Test computer
NEA-0545/01	IBM 3033	IBM 3033

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3. NATURE OF PHYSICAL PROBLEM SOLVED

This program computes the three-dimensional multigroup neutron diffusion equation using the finite element method.

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4. METHOD OF SOLUTION

The equation is solved using a solution algorithm based on a Galerkin-type scheme. Prism and box-shaped finite elements are used. The resulting equation system is solved using the sucessive over-relaxation method and the inner iterations are accelerated by a coarse mesh rebalancing technique.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Any down-scattering of neutrons is allowed but up-scattering and region-dependent fission spectra are not permitted.

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6. TYPICAL RUNNING TIME

The running time is 95 sec for a homogeneous cubic reactor problem with two energy groups and a 10 x 10 x 10 mesh.

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7. UNUSUAL FEATURES: UNUSUAL FEATURES OF THE PROGRAM

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8. RELATED OR AUXILIARY PROGRAMS: RELATED AND AUXILIARY PROGRAMS

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9. STATUS

Package ID	Status date	Status
NEA-0545/01	01-APR-1980	Tested at NEADB

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10. REFERENCES

- T. Ise, T. Yamazaki and Y. Nakahara:
'FEM-BABEL' - A Computer Program for Solving Three-Dimensional Diffusion Equation by the Finite Element Method
JAERI 1256 (1978).

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11. HARDWARE REQUIREMENTS: MACHINE REQUIREMENTS

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-0545/01	FORTRAN-IV

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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED: Standard

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14. ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

The following I/O files (units) are required: 1,2,3,4,5(card input), 6(printer),8,9,10,11,12,13,and 14.

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15. NAME AND ESTABLISHMENT OF AUTHOR

    T. Ise, T. Yamazaki and Y. Nakahara,
    Japan Atomic Energy Research Institute,
    Tokai-Mura, Ibaraki-ken, Japan

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16. MATERIAL AVAILABLE

NEA-0545/01

File name	File description	Records
NEA0545_01.001	INFORMATION	22
NEA0545_01.002	FEM-BABEL SOURCE (F4)	2811
NEA0545_01.003	JCL FOR COMPILATION AND LINKAGE EDIT	8
NEA0545_01.004	FEMADD SOURCE (F4)	112
NEA0545_01.005	JCL FOR C&L (FEMADD)	8
NEA0545_01.006	JCL FOR LINK (FEM-BABEL&FEMADD)	17
NEA0545_01.007	S.P. INPUT WITH JCL	67
NEA0545_01.008	PRINTED OUT OF S.P.	549

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17. CATEGORIES

C. Static Design Studies

Keywords: finite element method, multigroup, neutron diffusion equation, three-dimensional.