NEA-0228 EXCURS-3.

EXCURS-3, Reactor Kinetics and Heat Transfer in Cylindrical Channel During Accident

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

[ top ]

1. NAME OR DESIGNATION OF PROGRAM: EXCURS-3.

[ top ]

2. COMPUTERS

To submit a request, click below on the link of the version you wish to order. Rules for end-users are available here.

Program name	Package id	Status	Status date
EXCURS-3	NEA-0228/01	Tested	01-NOV-1968

Machines used:

Package ID	Orig. computer	Test computer
NEA-0228/01	IBM 360 series	IBM 360 series

[ top ]

3. NATURE OF PHYSICAL PROBLEM SOLVED

To analize the reactor transient caused by an accident (insertion of ramp or step reactivity, channel blockage or coast-down of coolant flow), this programme solves completed kinetics and heat equations in a cylindrical channel.

[ top ]

4. METHOD OF SOLUTION

One point mono-energetic kinetic equation is solved by a modified Runge-Kutta method. Heat equation is solved by modified Euler method. Temperature dependencies of conductivity density and specific heat of material are expressed by a second order polynomial of temperature. Decay after reactor shut down is also taken into account. A technique for self-adjusting the time interval is available.

[ top ]

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

   Number of energy group 1.
   Maximum number of radial mesh points 8.
   Maximum number of axial mesh points 19.

[ top ]

6. TYPICAL RUNNING TIME

It takes 1 min. / 100 time points in the case of 8 radial points and 12 axial points.

[ top ]

7. UNUSUAL FEATURES OF THE PROGRAM

This programme is effective for the problem having strong temperature dependency of heat conduction and Doppler effect.

[ top ]

8. RELATED OR AUXILIARY PROGRAMS: RELATED AND AUXILIARY PROGRAMS

[ top ]

9. STATUS

Package ID	Status date	Status
NEA-0228/01	01-NOV-1968	Tested at NEADB

[ top ]

10. REFERENCES

REFERENCES.
- S. Saito:
  Kinetics Analysis Code EXCURS (in Japanese)
  JAERI-memo-2515.
- S. Saito:
  Input Description (in English).

[ top ]

11. MACHINE REQUIREMENTS: 32k.

[ top ]

12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-0228/01	FORTRAN-IV

[ top ]

13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED: IBM 7044 FORTRAN monitor.

[ top ]

14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

[ top ]

15. NAME AND ESTABLISHMENT OF AUTHOR

       S. Saito
       Tokai Research Establishment
       JAERI
       Tokai-Mura, Naka-Gun
       Ibaraki-Ken, Japan

[ top ]

16. MATERIAL AVAILABLE

NEA-0228/01