PDQ8; PDQ7; one, two, or three-dimensional, few group. [CDC7600,6600,CYBER175,170; IBM360; PDQ8 - FORTRAN and COMPASS (RUN and FTN compatible); PDQ7 - FORTRAN IV and COMPASS (CDC CYBER175), FORTRAN FTN4. 6 (CDC7600), FORTRAN IV (H) and BAL (IBM360)]
The PDQ series of programs is designed to solve the neutron diffusion-depletion problem in one, two or three dimensions. Very large problems can be accommodated. The three-dimensional spatial calculation may be either explicit or discontinuous trial function synthesis. Up to five lethargy groups are permitted. The fast group treatment may be simplified P(3), and the thermal neutrons may be represented by a single group or a pair of overlapping groups. Adjoint, fixed source, one iteration, additive fixed source, eigenvalue, and boundary value calculations may be performed. The programs utilize the HARMONY system to allow for time-dependent representation of cross section variation and generalized depletion chain solutions. In PDQ8 the depletion is a combination gross block depletion for all nuclides as well as a fine block depletion for a specified subset of the nuclides. The geometries available include rectangular, cylindrical, spherical, hexagonal, and, in PDQ8 only, a very general quadrilateral geometry with diagonal interfaces. All geometries allow variable mesh in all dimensions. Various control searches as well as temperature and xenon feedbacks are provided.CDC7600,6600,CYBER175,170;IBM360; PDQ8 - FORTRAN and COMPASS (RUN and FTN compatible); PDQ7 - FORTRAN IV and COMPASS (CDC CYBER175), FORTRAN FTN4.6 (CDC7600), FORTRAN IV (H) and BAL (IBM360); PDQ8 - SCOPE 1.1 (CDC7600), SCOPE 3.3 (CDC6600); PDQ7 - NOS 1.2 (CDC CYBER175), SCOPE 2.1.4 (CDC7600), OS/360 (IBM360); On CDC systems the central memory size should be at least 65K, the program will utilize up to 1000K of extended core memory, and up to four disks transferring in parallel. The IBM360 version of PDQ7 requires at least 400K bytes of memory and auxiliary disk storage (Models 2314 or 3330).
- Research Organization:
- Westinghouse Electric Corp., West Mifflin, PA (USA). Bettis Atomic Power Lab.
- OSTI ID:
- 6484886
- Report Number(s):
- ANL/NESC-275R; ON: DE83048275
- Resource Relation:
- Other Information: The total number of groups is limited to five, although six equations may be solved if the P(3) option is used. All storage is dynamic so no fixed problem size limits are imposed
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COMPUTER CODES
P CODES
NEUTRON DIFFUSION EQUATION
ONE-DIMENSIONAL CALCULATIONS
THREE-DIMENSIONAL CALCULATIONS
TWO-DIMENSIONAL CALCULATIONS
CYLINDERS
HEXAGONAL CONFIGURATION
ITERATIVE METHODS
SLABS
SPHERES
SYNTHESIS
CONFIGURATION
DIFFERENTIAL EQUATIONS
EQUATIONS
654003* - Radiation & Shielding Physics- Neutron Interactions with Matter