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Advances in supercell calculation methods and comparison with measurements

Abstract

In the last few years, modelling techniques have been developed in new supercell computer codes. These techniques have been used to model the CANDU reactivity devices. One technique is based on one- and two-dimensional transport calculations with the WIMS-AECL lattice code followed by super homogenization and three-dimensional flux calculations in a modified version of the MULTICELL code. The second technique is based on two- and three-dimensional transport calculations in DRAGON. The code calculates the lattice properties by solving the transport equation in a two-dimensional geometry followed by supercell calculations in three dimensions. These two calculation schemes have been used to calculate the incremental macroscopic properties of CANDU reactivity devices. The supercell size has also been modified to define incremental properties over a larger region. The results show improved agreement between the reactivity worth of zone controllers and adjusters. However, at the same time the agreement between measured and simulated flux distributions deteriorated somewhat. (author)
Authors:
Arsenault, B; [1]  Baril, R; Hotte, G [2] 
  1. Atomic Energy of Canada Limited, Mississauga, Ontario (Canada)
  2. Hydro-Quebec, Central Nucleaire Gentilly, Montreal, Quebec (Canada)
Publication Date:
Jul 01, 1996
Product Type:
Conference
Resource Relation:
Conference: 5. International conference on simulation methods in nuclear engineering, Montreal, PQ (Canada), 8-11 Sep 1996; Other Information: 13 refs., 5 tabs., 2 figs; PBD: 1996; Related Information: In: Simulation methods in nuclear engineering, by Girard, A.-M. (ed.), 2 v pages.
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; CANDU TYPE REACTORS; COMPUTER CODES; COMPUTERIZED SIMULATION; D CODES; LATTICE PARAMETERS; M CODES; NEUTRON TRANSPORT; REACTOR LATTICES; THREE-DIMENSIONAL CALCULATIONS
OSTI ID:
20247263
Research Organizations:
Canadian Nuclear Society, Toronto, ON (Canada)
Country of Origin:
Canada
Language:
English
Other Identifying Numbers:
Other: ISBN 0-919784-47-X; TRN: CA0200063018533
Submitting Site:
CANN
Size:
14 pages
Announcement Date:

Citation Formats

Arsenault, B, Baril, R, and Hotte, G. Advances in supercell calculation methods and comparison with measurements. Canada: N. p., 1996. Web.
Arsenault, B, Baril, R, & Hotte, G. Advances in supercell calculation methods and comparison with measurements. Canada.
Arsenault, B, Baril, R, and Hotte, G. 1996. "Advances in supercell calculation methods and comparison with measurements." Canada.
@misc{etde_20247263,
title = {Advances in supercell calculation methods and comparison with measurements}
author = {Arsenault, B, Baril, R, and Hotte, G}
abstractNote = {In the last few years, modelling techniques have been developed in new supercell computer codes. These techniques have been used to model the CANDU reactivity devices. One technique is based on one- and two-dimensional transport calculations with the WIMS-AECL lattice code followed by super homogenization and three-dimensional flux calculations in a modified version of the MULTICELL code. The second technique is based on two- and three-dimensional transport calculations in DRAGON. The code calculates the lattice properties by solving the transport equation in a two-dimensional geometry followed by supercell calculations in three dimensions. These two calculation schemes have been used to calculate the incremental macroscopic properties of CANDU reactivity devices. The supercell size has also been modified to define incremental properties over a larger region. The results show improved agreement between the reactivity worth of zone controllers and adjusters. However, at the same time the agreement between measured and simulated flux distributions deteriorated somewhat. (author)}
place = {Canada}
year = {1996}
month = {Jul}
}