last modified: 04-JUL-1986 | catalog | categories | new | search |

IAEA0920 CEBIS.

CEBIS, 1-D 2 Group Diffusion Code for Reactor Calculation

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1. NAME OR DESIGNATION OF PROGRAM:  CEBIS.
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2. COMPUTERS
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Program name Package id Status Status date
CEBIS IAEA0920/01 Tested 04-JUL-1986

Machines used:

Package ID Orig. computer Test computer
IAEA0920/01 DEC VAX 11/750 IBM 3081
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3. DESCRIPTION OF PROGRAM OR FUNCTION

CEBIS is a reactor physics code for calculations of multiplication factor, flux and power distributions in one dimensional cartesian, cylindrical and spherical geometry. It is intended for reactor physics calculations  of stationary thermal multipying systems in two group diffusion approximation. Besides the direct solution, the program gives also the adjoint solution of the diffusion equation.
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4. METHOD OF SOLUTION

The two group one dimensional time independent  diffusion equation is solved using finite differences method. The resulting two group diffusion system is solved by the method of fission density iteration. Each group equation is solved by Crout- Cholesky's method.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:
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6. TYPICAL RUNNING TIME:
IAEA0920/01
NEA-DB executed the test case included in this package  on an IBM 3081 computer in 4 seconds of CPU time.
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7. UNUSUAL FEATURES OF THE PROGRAM:
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8. RELATED AND AUXILIARY PROGRAMS:
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9. STATUS
Package ID Status date Status
IAEA0920/01 04-JUL-1986 Tested at NEADB
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10. REFERENCES:
IAEA0920/01, included references:
- M. Ravnik and I. Mele:
  CEBIS - One Dimensional Two-Group Diffusion Code for Reactor
  Calculations: Programme Manual for PDP-11/34 and IBM-PC Versions.
  IJS-DP-3856  (February 1985)
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11. MACHINE REQUIREMENTS:
IAEA0920/01
To run the test case on IBM 3081, 228K bytes of main storage were required.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
IAEA0920/01 FORTRAN-77
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:
IAEA0920/01
MVS-SP (IBM 3081)
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:
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15. NAME AND ESTABLISHMENT OF AUTHORS

          M. Ravnik, I. Mele
          P. Stefan Institute
          Ljubljana
          Yugoslavia
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16. MATERIAL AVAILABLE
IAEA0920/01
File name File description Records
IAEA0920_01.001 Information file 49
IAEA0920_01.002 CEBIS source (FORTRAN 77) 772
IAEA0920_01.003 JCL to run sample case 58
IAEA0920_01.004 Sample case input 36
IAEA0920_01.005 Sample case output 969
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17. CATEGORIES
  • C. Static Design Studies

Keywords: diffusion equations, flux distribution, multiplication factors, power distribution.