Computer Programs
NEA-0117 TRAWS-4.
last modified: 01-NOV-1964 | catalog | categories | new | search |

NEA-0117 TRAWS-4.

TRAWS-4, Axial Flux Distribution for Control Rod Variations

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1. NAME OR DESIGNATION OF PROGRAM:  TRAWS-4.
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2. COMPUTERS
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Program name Package id Status Status date
TRAWS-4 NEA-0117/01 Tested 01-NOV-1964

Machines used:

Package ID Orig. computer Test computer
NEA-0117/01 IBM 7094 IBM 7094
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3. NATURE OF PHYSICAL PROBLEM SOLVED

Evaluates axial flux distribution in a reactor for varying control rod insertions.
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4. METHOD OF SOLUTION

Newtons iterative method is applied to solve the transcendental equations which give the buckling.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Up to 25 values of control rod insertion can be treated in one case, and successive cases in one run. Simple one-group expressions for flux are used.
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6. TYPICAL RUNNING TIME

A 10 rod insertion case takes about 5 seconds  on the 7094.
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7. UNUSUAL FEATURES OF THE PROGRAM

Prints values of flux at intervals  of one-tenth of reactor height for each rod insertion, as well as buckling in regions with and without control rod.
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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-0117/01 01-NOV-1964 Tested at NEADB
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10. REFERENCES: - Mrs. J.O. Gedge:, TRAWS-4, CEGB, CB/A/0I19.
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11. MACHINE REQUIREMENTS:  32k.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-0117/01 FORTRAN-II (IBM)
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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED:  FORTRAN II monitor.
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14. ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:  Can run on a smaller machine.
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15. NAME AND ESTABLISHMENT OF AUTHOR

Mrs. J.O. Gedge
                                   C.E.G.B. Computing Branch
                                   Friars House
                                   Blackfriars Road
                                   London S.E.1.
                                   England
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16. MATERIAL AVAILABLE
NEA-0117/01
File name File description Records
NEA0117_01.001 SOURCE & DATA 162
NEA0117_01.002 OUTPUT 43
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17. CATEGORIES
  • C. Static Design Studies

Keywords: buckling, control elements, distribution, iterative methods, neutron flux.