Computer Programs

NEA-0468 SPARK.

NEA-0468 SPARK.

SPARK, Time-Dependent 1-D, 2-D, 3-D Diffusion with Heat Transfer and Feedback

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, 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: SPARK.

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2. COMPUTERS

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Program name	Package id	Status	Status date
SPARK	NEA-0468/01	Tested	01-JAN-1978

Machines used:

Package ID	Orig. computer	Test computer
NEA-0468/01	IBM 370 series	IBM 370 series

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3. NATURE OF PHYSICAL PROBLEM SOLVED

The time-dependent multigroup 1-dim, 2-dim, or 3-dim diffusion equation with heat transfer and feedback is solved using the quasi-static method.

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4. METHOD OF SOLUTION

A shape function is calculated at a series of time intervals. The point kinetics equations are used to give an amplitude factor between these intervals.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM: 15000 mesh points in 2 groups
8000 mesh points in 6 groups

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6. TYPICAL RUNNING TIME: Problem dependent.

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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-0468/01	01-JAN-1978	Tested at NEADB

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10. REFERENCES: - Nuclear Science and Engineering Vol. 36.3 p. 402

NEA-0468/01, included references:

- J.K. Fletcher:
  SPARK: A Computer Program to Solve the Time Dependent Multigroup
  Neutron Diffusion Equations in One, Two or Three Dimensions
  TRG Report 2707 (R) (October 1975)
- NEADB Note on SPARK Corrections (April 1980)

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11. MACHINE REQUIREMENTS: 590 kbytes of core storage and 6 disc files.

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-0468/01	FORTRAN-IV

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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED: ICL 470 DOS 7J.

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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.K. Fletcher
    Central Technical Services
    Risley
    United Kingdom

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16. MATERIAL AVAILABLE

NEA-0468/01

File name	File description	Records
NEA0468_01.001	INFORMATION	4
NEA0468_01.002	FD5 - LIBRARY CONVERTER (F4,EBCDIC)	72
NEA0468_01.003	FD5 - JCL	5
NEA0468_01.004	FD5 - INPUT DATA (BINARY,CARD IMAGE)	3656
NEA0468_01.005	SPARK - SOURCE PROGRAM (F4,EBCDIC)	4531
NEA0468_01.006	SPARK - RISLEY ROUTINES (F4,EBCDIC)	1254
NEA0468_01.007	SPARK - RISLEY ROUTINES (ASSEMBLER,EBCDIC)	382
NEA0468_01.008	SPARK - OVERLAY CARDS	33
NEA0468_01.009	SPARK - SAMPLE PROBLEM INPUT DATA (CASE 1)	106
NEA0468_01.010	SPARK - SAMPLE PROB. PRINTED OUTPUT(CASE 1)	1539
NEA0468_01.011	SPARK - JCL	29
NEA0468_01.012	SPARK - SAMPLE PROBLEM INPUT DATA (CASE 2)	207
NEA0468_01.013	SPARK - SAMPLE PROB. PRINTED OUTPUT(CASE 2)	1427

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17. CATEGORIES

F. Space - Time Kinetics, Coupled Neutronics - Hydrodynamics - Thermodynamics
J. Gamma Heating and Shield Design

Keywords: diffusion equations, feedback, heat transfer, multigroup, one-dimensional, reactor kinetics, three-dimensional, time dependence, two-dimensional.