NEA-0179 AXIFLUX.

AXIFLUX, Cosine Function Fit of Experimental Axial Flux in Cylindrical Reactor

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, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, 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: AXIFLUX.

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2. COMPUTERS

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Program name	Package id	Status	Status date
AXIFLUX	NEA-0179/01	Tested	01-JUL-1980

Machines used:

Package ID	Orig. computer	Test computer
NEA-0179/01	IBM 3033	IBM 3033

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3. NATURE OF PHYSICAL PROBLEM SOLVED

Calculates the parameters of the cosine function that will best fit data from axial flux distribution measurements in a cylindrical reactor.

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4. METHOD OF SOLUTION: Steepest descent for the minimization.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM: Number of measured points less than 200.

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6. TYPICAL RUNNING TIME

Depends on the data. A few seconds for a case with 30 points.

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7. UNUSUAL FEATURES OF THE PROGRAM

Determines the extrapolated height and estimates the associated errors for the computed quantities. When a computation has been carried out, it may be repeated after having omitted a specified number of measured points from the bottom end.

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8. RELATED AND AUXILIARY PROGRAMS: U9 KIRA RADIFLUX.

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9. STATUS

Package ID	Status date	Status
NEA-0179/01	01-JUL-1980	Tested at NEADB

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10. REFERENCES

NEA-0179/01, included references:

- O Holte:
  AXIFLUX and RADIFLUX - Two Computer Programmes for Curve Fitting
  to Data from Flux Distribution Measurements in a Cylindrical
  Reactor
  memo no 20. Mathematics Section Institutt for Atomenergi.

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11. HARDWARE REQUIREMENTS: MACHINE REQUIREMENTS

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-0179/01	FORTRAN-IV

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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED: SCOPE.

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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

O. Holte
                                   Institutt for Atomenergi
                                   Kjeller
                                   Norway.

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16. MATERIAL AVAILABLE

NEA-0179/01

File name	File description	Records
NEA0179_01.001	AXIFLUX SOURCE (F4,EBCDIC)	323
NEA0179_01.002	AXIFLUX SAMPLE PROBLEM INPUT	52
NEA0179_01.003	AXIFLUX SAMPLE PROBLEM OUTPUT	493
NEA0179_01.004	JCL AND INFORMATION	61

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17. CATEGORIES

C. Static Design Studies
O. Experimental Data Processing

Keywords: data processing, neutron flux.