CCC-0366 DASH.
DASH, Void Tracing Sn and Monte-Carlo Coupling Program with Angular Fluxes from DOT Program
NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROBLEM OR FUNCTION, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED, OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES
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| Program name | Package id | Status | Status date |
|---|---|---|---|
| DASH | CCC-0366/01 | Tested | 01-MAY-1979 |
Machines used:
| Package ID | Orig. computer | Test computer |
|---|---|---|
| CCC-0366/01 | IBM 360 series | IBM 360 series |
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3. DESCRIPTION OF PROBLEM OR FUNCTION
DASH is a program designed to process surface angular fluxes generated by the two-dimensional discrete ordinates code DOT. Using angular fluxes stored on tape by DOT from a cylindrical geometry calculation, DASH calculates angular fluxes on arbitrary cylindrical geometry surfaces outside th DOT boundaries.
Since flux information internal to DASH has a Monte Carlo format and can be collected into the tables appropriate to an Sn calculation, DASH can be used as coupling code. Source information can be input to DASH in either Sn or Monte Carlo format, and either format can be output for use as source information for a following coupled code.
DASH is a program designed to process surface angular fluxes generated by the two-dimensional discrete ordinates code DOT. Using angular fluxes stored on tape by DOT from a cylindrical geometry calculation, DASH calculates angular fluxes on arbitrary cylindrical geometry surfaces outside th DOT boundaries.
Since flux information internal to DASH has a Monte Carlo format and can be collected into the tables appropriate to an Sn calculation, DASH can be used as coupling code. Source information can be input to DASH in either Sn or Monte Carlo format, and either format can be output for use as source information for a following coupled code.
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4. METHOD OF SOLUTION
The calculation is carried out by a numerical integration of angular fluxes employing a single-event Monte Carlo routine. Particle traces are generated by random sampling of the Sn angular flux histograms or of power series fits to the Sn information. This employment of random sampling avoids the "ray effects" that would occur if DOT were extended to include void or pure absorber regions.
The calculation is carried out by a numerical integration of angular fluxes employing a single-event Monte Carlo routine. Particle traces are generated by random sampling of the Sn angular flux histograms or of power series fits to the Sn information. This employment of random sampling avoids the "ray effects" that would occur if DOT were extended to include void or pure absorber regions.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM
DASH accepts surface angular flux data from a tape generated by DOT problems of r-z geometry. The radial and axial interval sizes and quadrature constants must be identical to those used in the DOT problem.
Dimensions of subscripted variables are set by control parameters in the input data. Only the sizes of two large arrays, named A and B, are fixed. These arrays contain all the dimensioned variables. There size is limited by the problem requirements and the core storage available.
Only one DOT source tape and one Monte Carlo tape can be generated per stack of cases. Each stack can operate on only one output tape from DOT.
DASH accepts surface angular flux data from a tape generated by DOT problems of r-z geometry. The radial and axial interval sizes and quadrature constants must be identical to those used in the DOT problem.
Dimensions of subscripted variables are set by control parameters in the input data. Only the sizes of two large arrays, named A and B, are fixed. These arrays contain all the dimensioned variables. There size is limited by the problem requirements and the core storage available.
Only one DOT source tape and one Monte Carlo tape can be generated per stack of cases. Each stack can operate on only one output tape from DOT.
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CCC-0366/01, included references:
- Duaine Lindstrom:DASH - FORTRAN IV Void Tracing and Sn-Monte Carlo Bridging Code
SRT-TRM01-W393-4C (May 1970)
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CCC-0366/01
| File name | File description | Records |
|---|---|---|
| CCC0366_01.001 | DOTAPE -- SOURCE PROGRAM (F4,EBCDIC) | 37 |
| CCC0366_01.002 | DOTAPE -- SAMPLE PROBLEM INPUT DATA | 9 |
| CCC0366_01.003 | DASH -- SOURCE PROGRAM (F4,EBCDIC) | 3130 |
| CCC0366_01.004 | DASH -- SAMPLE PROBLEM INPUT DATA | 21 |
| CCC0366_01.005 | DOTAPE -- SAMPLE PROBLEM PRINTED OUTPUT | 33 |
| CCC0366_01.006 | DASH -- SAMPLE PROBLEM PRINTED OUTPUT | 130 |
| CCC0366_01.007 | DOTAPE&DASH -- JCL + INFORMATION | 69 |
Keywords: Monte Carlo method, angular distribution, cylindrical configuration, discrete ordinate method, flux distribution, two-dimensional.