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[Program Service | Recent programs]

NEA-0108 ALCI. (Abstract last modified 25-JUN-1981)


ALCI, Homogenious 2-D MultiGroup Neutron Diffusion in X-Z, R-Z, R-Theta Geometry with Criticality Search

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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 - ALCI.


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
ALCI                 NEA-0108/01 Tested
ALCI                 NEA-0108/02 Obsolete

Machines used:
Package-ID     Orig.Computer                       Test Computer
NEA-0108/01    IBM 370 series                      IBM 370 series

3. NATURE OF PHYSICAL PROBLEM SOLVED - Solves the homogeneous multigroup two-dimensional neutron diffusion equations in the x-y, r-z and r-theta geometries. Geometrical and composition criticality searches are allowed. The adjoint problem can be solved optionally.


4. METHOD OF SOLUTION - The internal iterations are treated by the alternating directions method. The external iterations are treated by the Chebyshev extrapolation technique.


5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM -
                                   ALCI-1     ALCI-2
          maximum number of groups    12          3
          maximum number of points  6000       3600
          maximum number of regions  300       1000


6. TYPICAL RUNNING TIME -


7. UNUSUAL FEATURES OF THE PROGRAM -


8. RELATED AND AUXILIARY PROGRAMS - The version distributed by the library is a translation of the original (written in French FORTRAN) with minor modifications in the standard French library subroutines.


9. STATUS
NEA-0108/01: 01-DEC-1973 Tested at NEADB
NEA-0108/02: 25-JUN-1981 Obsolete


10. REFERENCES  - 
NEA-0108/01:
- J.P. Bayard et al.:
  Specification d'un Code de Diffusion Multigroupe a deux
  Dimensions: ALCI
  CEA - R 2747 (1965).


11. MACHINE REQUIREMENTS -


12. PROGRAMMING LANGUAGE(S) USED -
NEA-0108/01: FORTRAN-IV 


13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED - FORTRAN monitor.


14. ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS - The programme is divided into 5 links.


15. NAME AND ESTABLISHMENT OF AUTHOR -
J.P. Bayard, A. Guillou, B. Lago, M.J. Bureau du Colombier, G. Gillou, C. Vasseur
    C.E.N. Saclay
    France


16. MATERIAL AVAILABLE -
NEA-0108/01:
NEA0108_01.001    SYSTEM SUBROUTINES (ASSEMBLER)                   1257 records
NEA0108_01.002    SOURCE PROGRAM (FORTRAN)                         5902 records
NEA0108_01.003    OVERLAY CONTROL CARDS                              15 records
NEA0108_01.004    SAMPLE PROBLEM                                     27 records
NEA0108_01.005    OUTPUT LIST OF SAMPLE PROBLEM                     720 records


17. CATEGORIES  - 

- C.  Static Design Studies


Keywords: CRITICALITY SEARCHES, MULTIGROUP, NEUTRON DIFFUSION EQUATION, NUMERICAL SOLUTION, R-THETA, R-Z, TWO-DIMENSIONAL, X-Y

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