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NEA-0072 ZADOC.

ZADOC, 2 Group Time-Dependent Burnup in X-Y Geometry with Fuel Management

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1. NAME OR DESIGNATION OF PROGRAM:  ZADOC.
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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
ZADOC NEA-0072/01 Tested 01-JUN-1965

Machines used:

Package ID Orig. computer Test computer
NEA-0072/01 IBM 7090 IBM 7090
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3. NATURE OF PHYSICAL PROBLEM SOLVED

Two neutron group diffusion equations for a square mesh in x-y geometry are solved to yield a power distribution. Burnup for one time step is simulated by inter-  polation in a library of two-group cross sections which forms part of the problem data. It is assumed that the power distribution is invariant during one time step, at the end of which a re-calculation of flux and power follows automatically. Burnup proceeds in a succession of time steps and a number of fuel management options are available.
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4. METHOD OF SOLUTION:  Standard finite difference methods are used.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

The programme is restricted to two neutron groups. Limits on the number of mesh points are as follows

     IBM 7030   61 x 61
     IBM 7090   32 x 32
see also AEEW - R.425.
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6. TYPICAL RUNNING TIME:  See AEEW - R.425.
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7. UNUSUAL FEATURES OF THE PROGRAM:  See AEEW - R.425.
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8. RELATED AND AUXILIARY PROGRAMS

The METHUSELAH programme reported in AEEW - R.135 may be used to produce libraries of two group cross  sections required for ZADOC calculations.
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9. STATUS
Package ID Status date Status
NEA-0072/01 01-JUN-1965 Tested at NEADB
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10. REFERENCES

- F.R. Allen:
  ZADOC, A Two Group, Two Dimensional Fuel Management Programme for IBM 7090 or Stretch
  AEEW-R 425.
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11. MACHINE REQUIREMENTS

IBM 7090 - a 32k store is required for the standard version of the programme arranged to take up to 32 x 32 mesh points. Simple changes to a number of dimension statements would allow the programme to be accommodated in a smaller store.
A clock is required by the standard version, though this could be dispensed with by simple modifications to the programme. Where a clock is not available, a modificed version of the programme terminates on total burnup time rather than total execution time.
IBM 7030 - the 7030 version is written in S2 suitable for use on the Aldermaston computer. Variable dimension statements are employed so that the programme could be used in different sizes of core, e.g. when a 80,000 store is available up to 61 x 61 mesh points can be employed.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-0072/01 FORTRAN-II (IBM)
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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED:  FORTRAN monitor for IBM 7090, S2 (A.W.R.E. Aldermaston).
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14. ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:  No programmer tapes, no discs, no links.
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15. NAME AND ESTABLISHMENT OF AUTHOR

Dr. F.R. Allen
                                   A.E.E., Winfrith,
                                   Dorchester
                                   Dorset, England
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16. MATERIAL AVAILABLE
NEA-0072/01
File name File description Records
NEA0072_01.001 SOURCE & DATA 1319
NEA0072_01.002 PRINTED OUTPUT 811
NEA0072_01.003 PUNCHED OUTPUT 119
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17. CATEGORIES
  • D. Depletion, Fuel Management, Cost Analysis, and Power Plant Economics

Keywords: burnup, finite difference method, fuel management, neutron diffusion equation, power distribution, two-dimensional, x-y.