Computer Programs

NEA-0174 ARLEKIN.

NEA-0174 ARLEKIN.

ARLEKIN, General Point Reactor Kinetics by Lie-Series Method

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

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1. NAME OR DESIGNATION OF PROGRAM: ARLEKIN.

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2. COMPUTERS

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Program name	Package id	Status	Status date
ARLEKIN	NEA-0174/01	Tested	01-JUL-1967

Machines used:

Package ID	Orig. computer	Test computer
NEA-0174/01	IBM 7090	IBM 7090

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3. NATURE OF PHYSICAL PROBLEM SOLVED

It solves reactor kinetic equations. Equations of variables defining feedback may be non- linear. The external reactivity may be expressed in terms of a linear combination of time-dependent functions such as step- functions, ramps, sine-functions or exponentials. Cooling coefficients are allowed to vary discontinuously in time in order to simulate pump accidents.

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4. METHOD OF SOLUTION

The differential equations are integrated using the Lie-series method.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

The maximum number of differential equations that can be solved simultaneously is 30.
20 groups of delayed neutrons.
8 feedback equations.

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6. TYPICAL RUNNING TIME: 1 - 5 min. depending on the case.

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7. UNUSUAL FEATURES: UNUSUAL FEATURES OF THE PROGRAM

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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-0174/01	01-JUL-1967	Tested at NEADB

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10. REFERENCES

NEA-0174/01, included references:

- J.C. Mayor, J. Menning, G. Sarlos:
A Generalised Reactor Kinetics Code Using Lie-Series
EIR-Bericht no. 111 (1967).

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11. HARDWARE REQUIREMENTS: MACHINE REQUIREMENTS

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-0174/01	FORTRAN-II (IBM)

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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

J.C. Mayor
EIR Wuerenlingen AG.
Switzerland

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16. MATERIAL AVAILABLE

NEA-0174/01

File name	File description	Records
NEA0174_01.001	SOURCE & DATA	552
NEA0174_01.002	OUTPUT	159

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17. CATEGORIES

E. Space-Independent Kinetics
G. Radiological Safety, Hazard and Accident Analysis

Keywords: feedback, loss-of-coolant accident, reactor kinetics, time dependence.