1. NAME AND TITLE
DOQDP: Discrete Ordinates Quadrature Generator.
Oak Ridge National Laboratory, Oak Ridge, Tennessee.
3. CODING LANGUAGE AND COMPUTER
Fortran IV; IBM 360/370.
4. NATURE OF PROBLEM SOLVED
DOQDP generates direction sets (quadratures used as input to ANISN, DOT, and other related
codes). If a fully symmetric quadrature is desired, DOQDP can generate the direction cosines to be
used. If other than a fully symmetric quadrature is to be generated, the user must supply the
appropriate direction cosines. Once the direction cosines are specified, DOQDP will generate the
5. METHOD OF SOLUTION
To determine point weights, DOQDP solves a set of simultaneous liner equations by Gaussian
elimination with error improvement iterations.
6. RESTRICTIONS OR LIMITATIONS
7. TYPICAL RUNNING TIME
An S16 fully symmetric quadrature generation requires about one second on the IBM 360/91
8. COMPUTER HARDWARE REQUIREMENTS
DOQDP is operable on the IBM 360/370 computers.
9. COMPUTER SOFTWARE REQUIREMENTS
A Fortran IV compiler is required.
J. P. Jenal, P. J. Erickson, W. A. Rhoades, D. B. Simpson, and M. L. Williams, "The Generation
of a Computer Library for Discrete Ordinates Quadrature Sets," ORNL/TM-6023 (September 1977).
11. CONTENTS OF CODE PACKAGE
Included are the referenced document and one (1.2MB) DOS diskette which contains the source
code and sample problem input and output.
12. DATE OF ABSTRACT
September 1977; revised and updated March 1984.
KEYWORDS: ANISN FORMAT; ANISN/DOT INPUT or DATA GENERATOR