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NEA-0333 COSTANZA-RZ.

COSTANZA-RZ, 1-D Liquid Cooled Reactor Dynamic in R-Z Geometry

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1. NAME OR DESIGNATION OF PROGRAM:  COSTANZA-RZ.
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2. COMPUTERS
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Program name Package id Status Status date
COSTANZA-RZ NEA-0333/01 Tested 01-JUN-1972

Machines used:

Package ID Orig. computer Test computer
NEA-0333/01 IBM 360 series IBM 360 series
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3. NATURE OF PHYSICAL PROBLEM SOLVED

It solves problems of reactor dynamics with consideration of the variable spatial distribution of fluxes and local temperature feed-back. The geometry is cylindrical with two dimensions, r and z.
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4. METHOD OF SOLUTION

The time dependent diffusion equations with two  energy groups are solved with the finite difference approximation.
A direct method of solution for both groups is used along the radius and alternative iterations are made along the z dimension.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

A maximum number of 400 lattice points may be used.
30 composition regions.
10 vertical zones, with independent control rods and different cooling channels with single phase coolant.
6 groups of delayed neutrons.
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6. TYPICAL RUNNING TIME
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7. UNUSUAL FEATURES OF THE PROGRAM

The initial equilibrium conditions are determined with the temperature feed-back.
Criticality may be achieved with control rod movement, or with variable poison concentration in any region.
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8. RELATED OR AUXILIARY PROGRAMS: RELATED AND AUXILIARY PROGRAMS
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9. STATUS
Package ID Status date Status
NEA-0333/01 01-JUN-1972 Tested at NEADB
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10. REFERENCES
NEA-0333/01, included references:
- EURATOM Report EUR 4673E.
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11. MACHINE REQUIREMENTS:  Magnetic tapes.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-0333/01 FORTRAN-IV
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13. SOFTWARE REQUIREMENTS: OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED
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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

        Joint Research Centre
        21020 Ispra (Varese)
        Italy.
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16. MATERIAL AVAILABLE
NEA-0333/01
File name File description Records
NEA0333_01.001 SOURCE PROG.+INPUT DATA 2582
NEA0333_01.002 PRINTED OUTPUT 2995
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17. CATEGORIES
  • F. Space - Time Kinetics, Coupled Neutronics - Hydrodynamics - Thermodynamics
  • G. Radiological Safety, Hazard and Accident Analysis

Keywords: cylinders, finite difference method, neutron diffusion equation, r-z, reactor kinetics, reactor safety, temperature feedback, time dependence, two-dimensional.