Computer Programs
NEA-0315 EXPANDA-70.
last modified: 01-DEC-1971 | catalog | categories | new | search |

NEA-0315 EXPANDA-70.

EXPANDA-70, 1-D Neutron Diffusion in Slab, Cylindrical, Spherical Geometry with Criticality Search

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1. NAME OR DESIGNATION OF PROGRAM:  EXPANDA-70.
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2. COMPUTERS
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Program name Package id Status Status date
EXPANDA-70 NEA-0315/01 Tested 01-DEC-1971

Machines used:

Package ID Orig. computer Test computer
NEA-0315/01 IBM 360 series IBM 360 series
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3. NATURE OF PHYSICAL PROBLEM SOLVED

EXPANDA-70 is a one-dimensional,  real or adjoint solution for a slab, cylinder or sphere, and at the  same time a dimensional critical search may be made, if requested.
In the numerical solution, the methods are the same as EXPANDA-4.  Therefore, EXPANDA-70 is an extension of EXPANDA-4.
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4. METHOD OF SOLUTION

The central difference approximation is adopted  for the differential coefficients. The three points difference equation is solved by the ordinary sets of two points recurrence formula.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM
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6. TYPICAL RUNNING TIME:  About 5-7 minutes (in CPU time) for the typical case.
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7. UNUSUAL FEATURES: UNUSUAL FEATURES OF THE PROGRAM
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8. RELATED AND AUXILIARY PROGRAMS:  JFUSER, LTFR-70, EXPANDA-4.
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9. STATUS
Package ID Status date Status
NEA-0315/01 01-DEC-1971 Tested at NEADB
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10. REFERENCES
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11. MACHINE REQUIREMENTS

About 64 k words (in overlay structure) including I/O subroutines and buffers.
One magnetic tape unit for library data and six disk scratch units required.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-0315/01 FORTRAN-IV
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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED:  FACOM-230/60 monitor system (monitor V).
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS
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15. NAME AND ESTABLISHMENT OF AUTHOR

       Akira Hasegawa
       JAERI
       Tokai-mura, Naka-gun
       Ibaraki-ken, Japan
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16. MATERIAL AVAILABLE
NEA-0315/01
File name File description Records
NEA0315_01.001 INFORMATION 4
NEA0315_01.002 SOURCE PROGRAMME + OVERLAY + INPUT CARDS 1701
NEA0315_01.003 LTFR-70 SOURCE PROGRAMME + INPUT CARDS 408
NEA0315_01.004 PRINTED OUTPUT 9443
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17. CATEGORIES
  • C. Static Design Studies

Keywords: cylinders, diffusion, fast reactors, neutron flux, one-dimensional, reaction kinetics, slabs, spheres.