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

Abstract

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.

Authors:
Publication Date:
Research Org.:
Georgia Tech Research Corporation (US)
Sponsoring Org.:
(US)
OSTI Identifier:
816337
Report Number(s):
DOE/ID/13960
TRN: US0304986
DOE Contract Number:  
FG07-00ID13960
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 30 Sep 2003
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; BOUNDARY CONDITIONS; CROSS SECTIONS; DESIGN; DIFFUSION; HOMOGENIZATION METHODS; REACTOR CORES; SIMULATION

Citation Formats

Farzad Rahnema. High-Order Homogenization Method in Diffusion Theory for Reactor Core Simulation and Design Calculation. United States: N. p., 2003. Web. doi:10.2172/816337.
Farzad Rahnema. High-Order Homogenization Method in Diffusion Theory for Reactor Core Simulation and Design Calculation. United States. doi:10.2172/816337.
Farzad Rahnema. Tue . "High-Order Homogenization Method in Diffusion Theory for Reactor Core Simulation and Design Calculation". United States. doi:10.2172/816337. https://www.osti.gov/servlets/purl/816337.
@article{osti_816337,
title = {High-Order Homogenization Method in Diffusion Theory for Reactor Core Simulation and Design Calculation},
author = {Farzad Rahnema},
abstractNote = {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.},
doi = {10.2172/816337},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Sep 30 00:00:00 EDT 2003},
month = {Tue Sep 30 00:00:00 EDT 2003}
}

Technical Report:

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