A three-dimensional collision probability method: Criticality and neutron flux in a hexahedron setup

被引：1
|
作者：
de Camargo, Dayana Q. [1 ,2 ]
Bodmann, Bardo E. J. [1 ,2 ]
Garcia, Roberto D. M. [3 ]
de Vilhena, Marco T. [1 ,2 ]
机构：
[1] Univ Fed Rio Grande do Sul, PROMEC, BR-90035190 Porto Alegre, RS, Brazil
[2] Univ Fed Rio Grande do Sul, PPGMAp, BR-90035190 Porto Alegre, RS, Brazil
[3] Inst Estudos Avancados, BR-12228001 Sao Jose Dos Campos, SP, Brazil
来源：
ANNALS OF NUCLEAR ENERGY | 2009年 / 36卷 / 10期
关键词：
TRANSMISSION PROBABILITIES; GEOMETRY; ESCAPE;
D O I：
10.1016/j.anucene.2009.03.021
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
In this work, the collision probability (CP) method is applied to the solution of the one-group criticality problem for a hexahedron. The method is implemented with the spatial domain being partitioned into zones, where the flat-flux approximation is used. A numerical method is employed for computing the required collision probabilities. The method is based on the subdivision of the spatial zones into elements and on the assumption that the interaction between an emission element: and a collision element occurs only along the path that connects their centers of mass. The calculation is repeated, increasing the number of elements successively and using Richardson extrapolation to accelerate the convergence of the sequence of results. Some sample cases are studied in detail and a comparison with results from diffusion theory is presented. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1614 / 1618
页数：5
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