DISCRETE ORDINATE QUADRATURES FOR THIN SLAB CELLS
Fluxes of thin slab cells calculated by discrete SN method, DSN(N = 2, 4, 8, 16), single-spherical harmonics, PN(N = nent occurs predominantly in the region about mu = 0. The spatially dependent part of the spatial flux is largely determined by a few nearest-neighbor source regions. The anisotropic flux component originates largely from the isotropic effective sources arising from the nonspatially dependent part of the spatial flux. Two quadrature forms, for use in discrete ordinate methods of solutions for thin cells, are described which emphasize the small mu directions. One is based on a simplified integral transport approximation. The other is a modified form of the single Gaussian quadrature. Methods of choosing the quadratures and representative results are discussed. (auth)
- Research Organization:
- Argonne National Lab., Ill.
- NSA Number:
- NSA-17-005313
- OSTI ID:
- 4755943
- Journal Information:
- Nuclear Science and Engineering (U.S.), Journal Name: Nuclear Science and Engineering (U.S.) Vol. Vol: 14; ISSN NSENA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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