NEA-0333 COSTANZA-RZ.

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

NAME OR DESIGNATION OF PROGRAM, COMPUTER, NATURE OF PHYSICAL PROBLEM SOLVED, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, CPU, UNUSUAL FEATURES OF THE PROGRAM, AUXILIARIES, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM, OTHER RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: COSTANZA-RZ.

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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
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.