NEA-0090 DYNAMF.

DYNAMF, Time-Dependent Reactor Dynamics by Laplace Transformation

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

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1. NAME OR DESIGNATION OF PROGRAM: DYNAMF.

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2. COMPUTERS

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Program name	Package id	Status	Status date
DYNAMF	NEA-0090/01	Tested	01-OCT-1965

Machines used:

Package ID	Orig. computer	Test computer
NEA-0090/01	CDC 3600	CDC 3600

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3. NATURE OF PHYSICAL PROBLEM SOLVED: The reactor dynamics equation with respect to time.

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4. METHOD OF SOLUTION: Integral method from Schmid (Geneva Conference 1958).

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Number of delayed neutron-groups smaller than 30. Number of exponential-functions in the reactivity feedback function less than or equal to 30.
Number of exponential function in the special reactivity function less than or equal to 30. Number of time steps less than or equal to 2000.

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6. TYPICAL RUNNING TIME: About 110 ms for each time step.

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7. UNUSUAL FEATURES OF THE PROGRAM

The problem of an ideal reactivity jump can be computed very rapidly. The uranium and the moderator temperature can be computed.
The CDC-version of this programme gives a graph of the power, the internal and the special reactivity.

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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-0090/01	01-OCT-1965	Tested at NEADB

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10. REFERENCES

NEA-0090/01, included references:

- J. Patry:
Die numerische Loesung des Grundproblems der Reaktordynamik
mit Hilfe eines Rechenautomaten
  RAG-Bericht NR. 8 (1958).
- J. Patry:
  La determination numerique du comportement dynamique d'une pile a l'aide d'une
calculatrice  electronique
  RAG-Bericht NR. 16 (1960).
- J. Patry:
Eine Reihe von Rechenprogrammen zur Loesung reaktorkinetischer und
reaktordynamischer Probleme mit Hilfe von Faltungsintegralen
  EIR-bericht NR. 29 (1962).

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11. MACHINE REQUIREMENTS: 32k. No special tapes.

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-0090/01	FORTRAN-IV

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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED: Normal FORTRAN-monitor.

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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. Patry
         EIR
         Federal Institute for Reactor Research
         Wuerenlingen/AG
         Switzerland

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16. MATERIAL AVAILABLE

NEA-0090/01

File name	File description	Records
NEA0090_01.001	SOURCE	797
NEA0090_01.002	DATA	80
NEA0090_01.003	OUTPUT	6493

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17. CATEGORIES

E. Space-Independent Kinetics

Keywords: Lagrange equations, reactor kinetics.