skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A multigroup albedo method for transport calculations: Application to the Orphee core

Abstract

Through the introduction of appropriate boundary conditions, the use of multigroup albedos permits one to concentrate the numerical effort of solving the transport equation in only the domain of interest, thus reducing computational requirements. Multigroup albedos that are representative of an external medium can be calculated via independent transport calculations and collapsed for use in a few-group three-dimensional transport calculation. The multigroup albedo method is developed and applied to the calculation of the Orphee research reactor. Numerical comparisons between full-core two-dimensional transport calculations and two-dimensional transport calculations performed with multigroup albedos show why the method is interesting. The axial power distribution obtained from a three-dimensional transport calculation with multigroup albedos precisely matches measured experimental values, while results from three-dimensional full-core diffusion calculations give unacceptable errors.

Authors:
; ; ;
Publication Date:
Research Org.:
Commissariat a l'Energie Atomique, Saclay (FR)
OSTI Identifier:
20030432
Resource Type:
Journal Article
Journal Name:
Nuclear Science and Engineering
Additional Journal Information:
Journal Volume: 135; Journal Issue: 1; Other Information: PBD: May 2000; Journal ID: ISSN 0029-5639
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; BOUNDARY CONDITIONS; MULTIGROUP THEORY; ALBEDO; THREE-DIMENSIONAL CALCULATIONS; ORPHEE REACTOR; REACTOR CORES; POWER DISTRIBUTION; TWO-DIMENSIONAL CALCULATIONS

Citation Formats

Rauck, S., Sanchez, R., Zmijarevic, I., and Nobile, M. A multigroup albedo method for transport calculations: Application to the Orphee core. United States: N. p., 2000. Web.
Rauck, S., Sanchez, R., Zmijarevic, I., & Nobile, M. A multigroup albedo method for transport calculations: Application to the Orphee core. United States.
Rauck, S., Sanchez, R., Zmijarevic, I., and Nobile, M. Mon . "A multigroup albedo method for transport calculations: Application to the Orphee core". United States.
@article{osti_20030432,
title = {A multigroup albedo method for transport calculations: Application to the Orphee core},
author = {Rauck, S. and Sanchez, R. and Zmijarevic, I. and Nobile, M.},
abstractNote = {Through the introduction of appropriate boundary conditions, the use of multigroup albedos permits one to concentrate the numerical effort of solving the transport equation in only the domain of interest, thus reducing computational requirements. Multigroup albedos that are representative of an external medium can be calculated via independent transport calculations and collapsed for use in a few-group three-dimensional transport calculation. The multigroup albedo method is developed and applied to the calculation of the Orphee research reactor. Numerical comparisons between full-core two-dimensional transport calculations and two-dimensional transport calculations performed with multigroup albedos show why the method is interesting. The axial power distribution obtained from a three-dimensional transport calculation with multigroup albedos precisely matches measured experimental values, while results from three-dimensional full-core diffusion calculations give unacceptable errors.},
doi = {},
journal = {Nuclear Science and Engineering},
issn = {0029-5639},
number = 1,
volume = 135,
place = {United States},
year = {2000},
month = {5}
}