1. NAME AND TITLE

DOMINO-II: General Purpose Code System for Coupling DOT-IV Discrete Ordinates and Monte Carlo Radiation Transport Calculations.

AUXILIARY ROUTINES

RANR

MORSE

PSR-64/DOMINO has been rewritten into DOMINO-II to allow processing of a DOT-IV multiple boundary source tape.

2. CONTRIBUTOR

Oak Ridge National Laboratory, Oak Ridge, Tennessee.

3. CODING LANGUAGE AND COMPUTER

Fortran IV; IBM 3033.

4. NATURE OF PROBLEM SOLVED

DOMINO-II implements the coupling of discrete ordinates (S_n) calculations with Monte Carlo calculations. In particular, CCC-89/DOT calculations in r-z geometry may be coupled with CCC-127/MORSE calculations of arbitrary geometric complexity. DOMINO-II is essentially a data processor for the angular flux tape produced by the discrete ordinates calculation.

5. METHOD OF SOLUTION

The discrete ordinates calculation is limited to an r-z geometry. Either the DOT boundary angular fluxes or the angular fluxes at internal surfaces may be input to DOMINO-II. Any amount of surface may be used in DOMINO-II; i.e., from all mesh intervals down to a portion of one interval. The radii, axes, and quadrature set must be read into DOMINO-II. Appropriate cumulative probability distributions are calculated from the angular fluxes and written on a tape. Four different types of tapes may be written for use in Monte Carlo codes: upward from a disk, downward from a disk, inward from a cylindrical surface, and outward from a cylindrical surface. DOMINO-II transforms the angular flux as a function of energy group, mesh interval and discrete angle into current and subsequently into normalized probability distributions. The output tape contains all necessary coupling information for use by the Monte Carlo code.

6. RESTRICTIONS OR LIMITATIONS

The amount of data necessary to perform coupling may be quite large. Storage requirements for such cases may exceed computer capacity. Therefore, only the necessary energy groups, mesh points and angles are included in the distributions on the tape and the routines have been flexibly dimensioned.

7. TYPICAL RUNNING TIME

No study has been made by RSIC of typical running times for DOMINO-II.

8. COMPUTER HARDWARE REQUIREMENTS

DOMINO-II is operable on the IBM 3033 computers.

9. COMPUTER SOFTWARE REQUIREMENTS

A Fortran IV compiler is required.

10. REFERENCES

M. B. Emmett, "DOMINO-II, A General Purpose Code for Coupling DOT-IV Discrete Ordinates and Monte Carlo Radiation Transport Calculations," ORNL/TM-7771 (May 1981).

M. B. Emmett, C. E. Burgart, and T. J. Hoffman, "DOMINO, A General Purpose Code for Coupling Discrete Ordinates and Monte Carlo Radiation Transport Calculations," ORNL-4853 (July 1973).

11. CONTENTS OF CODE PACKAGE

Included are the referenced documents and one (1.2MB) DOS diskette which contains the source code and sample problem input, plus output from the sample problem.

12. DATE OF ABSTRACT

April 1984.