High-Order Homogenization Method in Diffusion Theory for Reactor Core Simulation and Design Calculation

Technical Report · Tue Sep 30 00:00:00 EDT 2003

DOI:https://doi.org/10.2172/816337· OSTI ID:816337

Rahnema, Farzad

Most modern nodal methods in use by the reactor vendors and utilities are based on the generalized equivalence theory (GET) that uses homogenized cross sections and flux discontinuity factors. These homogenized parameters, referred to as infinite medium parameters, are precomputed by performing single bundle fine-mesh calculations with zero current boundary conditions. It is known that for configurations in which the node-to-node leakage (e.g., surface current-to-flux ratio) is large the use of the infinite medium parameters could lead to large errors in the nodal solution. This would be the case for highly heterogeneous core configurations, typical of modern reactor core designs.

• Research Organization: Georgia Tech Research Corporation (US)
• Sponsoring Organization: (US)
• DOE Contract Number: FG07-00ID13960
• OSTI ID: 816337
• Report Number(s): DOE/ID/13960; TRN: US0304986
• Resource Relation: Other Information: PBD: 30 Sep 2003
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
BOUNDARY CONDITIONS
CROSS SECTIONS
DESIGN
DIFFUSION
HOMOGENIZATION METHODS
REACTOR CORES
SIMULATION