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NESC0028 FOG

FOG-1-2-3, 1-D Few-Group Diffusion in Slab Cylindrical Spherical Geometry, Criticality Search, Buckling

NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROBLEM OR FUNCTION, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED, OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHORS, MATERIAL, CATEGORIES
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1. NAME OR DESIGNATION OF PROGRAM:  FOG
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2. COMPUTERS
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Program name Package id Status Status date
FOG NESC0028/02 Tested 01-NOV-1967

Machines used:

Package ID Orig. computer Test computer
NESC0028/02 IBM 360 series IBM 360 series
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3. DESCRIPTION OF PROBLEM OR FUNCTION

The  FOG program  solves  the
one-dimensional  few-group diffusion  equations  in  any of  three
geometries slab,  cylinder, or  sphere.  Provisions  are made  for
calculating the  flux, the adjoint  flux, and  various criticality
searches  as   well  as   a  buckling   iteration  and   automatic
Tschebyscheff  polynomial  computation   of  source  extrapolation
factors.
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4. METHOD OF SOLUTION:
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

   Input data must be macroscopic.
   Scattering is limited to the next lower group.
   1 to 4 energy groups are permitted.
   Maximum number of mesh points = 239.
   Maximum number of regions = 40.
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6. TYPICAL RUNNING TIME:  A  typical  problem requires  less  than  a
minute.
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7. UNUSUAL FEATURES OF THE PROGRAM:
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8. RELATED AND AUXILIARY PROGRAMS

AIM6  (NESC  Abstract  29).   The
original IBM7090 version of FOG was prepared by H. P. Flatt of the
Atomics International Mathematics and  Computer Sciences Division,
Canoga Park, California.
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9. STATUS
Package ID Status date Status
NESC0028/02 01-NOV-1967 Tested at NEADB
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10. REFERENCES

R.  L. Brunnenmeyer  and  R.  A. Mickle,  FOG  GE-625
Version (NE571) Users Notes, Bechtel Note, July 1968.
NESC0028/02, included references:
- H.P. Flatt:
  The FOG One-dimensional Diffusion Equation Codes
  (January 1961).
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11. MACHINE REQUIREMENTS:
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NESC0028/02 FORTRAN-IV
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:
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15. NAME AND ESTABLISHMENT OF AUTHORS

                 R. L. Brunnenmeyer and R. A. Mickle
                 Bechtel Corporation
                 50 Beale Street
                 San Francisco, California  94119
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16. MATERIAL AVAILABLE
NESC0028/02
File name File description Records
NESC0028_02.001 SOURCE IBM 360 3427
NESC0028_02.002 DATA 114
NESC0028_02.003 OUTPUT 919
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17. CATEGORIES
  • C. Static Design Studies

Keywords: criticality searches, cylinders, diffusion equations, few-group, neutron flux, one-dimensional, slabs, spheres.