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[Program Service | Recent programs]

NEA-0313 EXPANDA-6. (Abstract last modified 01-DEC-1971)


EXPANDA-6, 1-D Neutron Diffusion in Slab, Cylindrical, Spherical Geometry from JAERI Fast-Set with PuO2 UO2 Mixture

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Abstract Table of Contents:

NAME | COMPUTER | PROBLEM | SOLUTION | RESTRICTIONS | CPU | FEATURES | AUXILIARIES | STATUS | REFERENCES | REQUIREMENTS | LANGUAGE | OPERATING SYSTEM | OTHER RESTRICTIONS | AUTHOR | MATERIAL | CATEGORIES |

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1. NAME OR DESIGNATION OF PROGRAM - EXPANDA-6.


2. COMPUTER FOR WHICH PROGRAM IS DESIGNED AND OTHER MACHINE VERSION PACKAGES AVAILABLE -

To request or retrieve programs click on the one of the active versions below. A password and special authorization is required.

Explanation of the status codes.

Program-name         Package-ID  Status
EXPANDA-6            NEA-0313/01 Tested

Machines used:
Package-ID     Orig.Computer                       Test Computer
NEA-0313/01    IBM 360 series                      IBM 360 series

3. NATURE OF PHYSICAL PROBLEM SOLVED - EXPANDA-6 solves the one-dimensional diffusion equation in slab, cylinder or spherical geometry. It calculates effective cross sections, which will be used as the coefficients of the equation, from the library data of JAERI- Fast set with 25-group structure. The criticality adjustment can be done by the usual concentration search together with an optional search by changing concentration of PU02 in the PU02-U02 mixture.


4. METHOD OF SOLUTION - The central difference approximation is adopted for the differential coefficients. The three points difference equation is solved by the ordinary set of two points recurrence formulae.


5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM -


6. TYPICAL RUNNING TIME - About 2 or 3 minutes for the typical case.


7. UNUSUAL FEATURES OF THE PROGRAM -


8. RELATED AND AUXILIARY PROGRAMS - CONDENSE, LTFR-4.


9. STATUS
NEA-0313/01: 01-DEC-1971 Tested at NEADB


10. REFERENCES  - 
- T.Suzuki:
EXPANDA-3 EXPANDA-6, The One-Dimensional Diffusion Equation Codes for Fast Reactors with an Option of Concentations Search
  JAERI-Memo 4472 (1971) (written in Japanese).
NEA-0313/01:
- Expanda-3, Expanda-6 (JAERI-M 4472 1971)


11. MACHINE REQUIREMENTS - About 64 k words including I/O subroutines and buffers. One magnetic tape device and one or two scratch devices. (Another tape can be used as programme tape.)


12. PROGRAMMING LANGUAGE(S) USED -
NEA-0313/01: FORTRAN-IV 


13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED - IBM-360/J75 OS catalogued procedure (G-level).
FACOM-230/60 monitor system (LIBE operates the absolute address programme tape).


14. ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS -


15. NAME AND ESTABLISHMENT OF AUTHOR -
          Tomoo Suzuki
          JAERI
          Tokai-mura, Naka-gun
          Ibaraki-ken, Japan


16. MATERIAL AVAILABLE -
NEA-0313/01:
NEA0313_01.001    INFORMATION                                         4 records
NEA0313_01.002    SOURCE PROGRAMME +DD+ INPUT CARDS                1670 records
NEA0313_01.003    PRINTED OUTPUT                                   4795 records


17. CATEGORIES  - 

- B. Spectrum Calculations, Generation of Group Constants and Cell Problems
- C. Static Design Studies


Keywords: CRITICALITY, CROSS SECTIONS, CYLINDERS, DIFFERENCE EQUATIONS, DIFFUSION EQUATIONS, FAST REACTORS, NEUTRON FLUX, ONE-DIMENSIONAL, SLABS, SPHERES

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