Accuracy of nodal predictions of HWR core physics parameters

Conference · Wed Jan 01 04:00:00 EST 1992 · Transactions of the American Nuclear Society; (United States)

OSTI ID:6683959

Khalil, H; Stillman, J A ^[1]

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1. Argonne National Lab., IL (United States)

The DIF3D nodal scheme in hexagonal-Z geometry was originally designed primarily for application to fast reactors. Numerical tests of the scheme against fine-mesh diffusion theory results have previously been reported for a number of fast reactor benchmark problems with specified multigroup parameters. Here, we address the accuracy of DIF3D nodal when applied along with specific assembly homogenization procedures to heavy water reactors (HWRs), which are characterized by a significantly larger lattice pitch (measured in diffusion lengths) and a much more heterogeneous unit cell. The DIF3D nodal and homogenization tests were performed for a two-dimensional (planar hexagonal) core model exhibiting much of the heterogeneous detail of an unirradiated Savannah River National Laboratory-type HWR.

• OSTI ID: 6683959
• Report Number(s): CONF-921102--
• Conference Information: Journal Name: Transactions of the American Nuclear Society; (United States) Journal Volume: 66
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210400* -- Power Reactors
Nonbreeding
Otherwise Moderated or Unmoderated
CALCULATION METHODS
COMPUTER CODES
D CODES
HEAVY WATER MODERATED REACTORS
HOMOGENIZATION METHODS
KINETICS
MATHEMATICAL MODELS
NODAL EXPANSION METHOD
REACTOR COMPONENTS
REACTOR CORES
REACTOR KINETICS
REACTOR LATTICE PARAMETERS
REACTOR LATTICES
REACTORS
TWO-DIMENSIONAL CALCULATIONS