NESC0264 VARI-QUIR-3.

VARI-QUIR-3, 2-D MultiGroup Steady-State Neutron Diffusion in X-Y R-Z or R-Theta Geometry

NAME OR DESIGNATION OF PROGRAM, COMPUTER, NATURE OF PHYSICAL PROBLEM SOLVED, METHOD OF SOLUTION, RESTRICTIONS, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED, ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHORS, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: VARI-QUIR-3.

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2. COMPUTERS

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Program name	Package id	Status	Status date
VARI-QUIR-3	NESC0264/01	Tested	01-AUG-1967

Machines used:

Package ID	Orig. computer	Test computer
NESC0264/01	IBM 7094	IBM 7094

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3. NATURE OF PHYSICAL PROBLEM SOLVED

The steady-state, multigroup, two-dimensional neutron diffusion equations are solved in x-y, r-z, and r-theta geometry.

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4. METHOD OF SOLUTION

A Gauss-Seidel type of solution with inner and outer iterations is used. The source is held constant during the inner iterations.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

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6. TYPICAL RUNNING TIME

The running time is a function of the type of problem and the degree of convergence wanted.

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7. UNUSUAL FEATURES OF THE PROGRAM

VARI-QUIR3 has complete variable dimensions at execution time.

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8. RELATED AND AUXILIARY PROGRAMS: VARI-QUIR (ACC Abstract 212).

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9. STATUS

Package ID	Status date	Status
NESC0264/01	01-AUG-1967	Tested at NEADB

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10. REFERENCES

- G. Collier, C.E. Rieck, and J.W. Riese:
  VARI-QUIR A Two-Dimensional Time-Dependent Multi-Group Diffusion Code.
  WANL-TNR-133 revised, December 1965
- G. Collier and J.W. Riese:
  VARI-QUIR III Inclusion of the R-Theta Geometry.
  WANL-TME-1526, October 1966
- G. Collier and J.W. Riese:
  VARI-QUIR III, A Two-Dimensional Steady State Multi-Group Diffusion Code.
  WANL-TNR-189, December 1964
- A.H. Killinger and G.B. Killinger:
  Double Interpolation Subroutine.
  Westinghouse Analytical Department Report 62-1002, January 1962

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11. MACHINE REQUIREMENTS:
32k memory.

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NESC0264/01	FORTRAN-IV

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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED:
IBSYS operating system.

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14. ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

The auxiliary routine POTLUK generates a flux and adjoint guess for a VARI-QUIR problem whose internal region boundaries are different from those of a previous problem using the flux and adjoint from that problem. This enables users to vary the interfaces at will and still optimize running time. VARI-QUIR III requires a double interpolation subroutine.

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15. NAME AND ESTABLISHMENT OF AUTHORS

                 George Collier
                 Reactor Physics and Mathematics
                 Westinghouse Astronuclear Laboratory
                 P. O. Box 10864
                 Pittsburgh, Pennsylvania  15236.

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16. MATERIAL AVAILABLE

NESC0264/01