NEA-0001: AIREK-MOD, Time Dependent Reactor Kinetics with Feedback Differencial Equation

OECD Nuclear Energy Agency / L'Agence pour l'énergie nucléaire

OECD-OCDE

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NEA-0001 AIREK-MOD. (Abstract last modified 04-APR-1984)

AIREK-MOD, Time Dependent Reactor Kinetics with Feedback Differencial Equation

Abstract Table of Contents:

OPERATING SYSTEM

OTHER RESTRICTIONS

1. NAME OR DESIGNATION OF PROGRAM - AIREK-MOD.

2. COMPUTER FOR WHICH PROGRAM IS DESIGNED AND OTHER MACHINE VERSION PACKAGES AVAILABLE -

To request or retrieve programs click on the one of the active versions below. A password and special authorization is required.

Explanation of the status codes.

Program-name Package-ID Status AIREK-MOD NEA-0001/01 Tested AIREK-MOD NEA-0001/02 Obsolete

Machines used: Package-ID Orig.Computer Test Computer NEA-0001/01 IBM 360 series IBM 360 series

3. NATURE OF PHYSICAL PROBLEM SOLVED - Solves the reactor kinetic equations with respect to time. A standard form for the reactivity behaviour has been introduced in which the reactivity is given by the sum of a polynomial, sine, cosine and exponential expansion.
Tabular form is also included.
The presence of feedback differential equations in which the dependence on variables different from the considered one is considered enables many heat-exchange problems to be dealt with.

4. METHOD OF SOLUTION - The method employed for the solution of the differential equations is the one developed by E.R. Cohen (Geneva Conference, 1958).

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM - The maximum number of differential equations that can be solved simultaneously is 50.
Within this limitation there may be n delayed neutron groups (n less than or equal to 25), on m other linear feedback equations (n+m less than or equal to 49).

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

7. UNUSUAL FEATURES OF THE PROGRAM -

8. RELATED AND AUXILIARY PROGRAMS - AIREK-MOD is a program derived from AIREK-2. New features are the standard form for the reactivity, the presence in a number of differential equations of feedback variables different from the considered one and the production of a point-plot for the neutronic power.
AIREK-CDC is the CDC 1604A version of AIREK-MOD. It includes a modification to allow the output to be obtained after a sequence of n time steps, (data(499)=1-n). For data (499) greater than zero, the job will be stopped.

9. STATUS
NEA-0001/01: 01-NOV-1967 Tested at NEADB
NEA-0001/02: 04-APR-1984 Obsolete

10. REFERENCES  -
- A. Schwartz:
  Generalised Reactor Kinetics Code AIREK-II
  NAA-SR-MEMO 4980 (1959)
NEA-0001/01:
- C. Mongini-Tamagnini:
  AIREK-MOD: A Modified Version of the Kinetic Code AIREK II,
  EUR 1914.e (August 1964)
- C.E.T.I.S.:
  AIREK-MOD (How to use the code)

11. MACHINE REQUIREMENTS - About 3k (+ library routines) core storage.

12. PROGRAMMING LANGUAGE(S) USED -
NEA-0001/01: FORTRAN-IV

13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED -
FORTRAN II under IBSYS, or FORTRAN II monitor. (IBM 7090).
IBM 360 Operating System.
CO-OP Monitor System (CDC1604).

14. ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS -

15. NAME AND ESTABLISHMENT OF AUTHOR -
           C. Tamagnini
           CETIS
           EURATOM - C.C.R.
           Ispra (Varese), Italy
CDC 1604 version was offered by EIR (Institut Federal de Recherches en matiere de reacteurs, Switzerland).

16. MATERIAL AVAILABLE -
NEA-0001/01:
NEA0001_01.001 SOURCE & DATA 360/65 796 records
NEA0001_01.002 OUTPUT 2560 records

17. CATEGORIES -

- E. Space
Independent Kinetics

Keywords: DIFFERENTIAL EQUATIONS, HEAT EXCHANGERS, REACTOR KINETICS

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