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
To submit a request, click below on the link of the version you wish to order. Only liaison officers are authorised to submit online requests. Rules for requesters are available here.
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.