Isogeometric analysis for the multigroup neutron diffusion equation with applications in reactor physics

被引：18

作者：

Welch, J. A. ^{[1
]}

Kophazi, J. ^{[1
]}

Owens, A. R. ^{[1
]}

Eaton, M. D. ^{[1
]}

机构：

[1] Imperial Coll Sci Technol & Med, Dept Mech Engn, Prince Consort Rd, London SW7 2AZ, England

来源：

ANNALS OF NUCLEAR ENERGY | 2017年 / 101卷

基金：

英国工程与自然科学研究理事会;

关键词：

Isogeometric analysis; Neutron diffusion; NURBS; Finite elements; Bubnov-Galerkin; GEOMETRY;

D O I：

10.1016/j.anucene.2016.11.015

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：

Isogeometric Analysis (IGA) has been applied to heterogeneous reactor physics problems using the multi group neutron diffusion equation. IGA uses a computer-aided design (CAD) description of the geometry commonly built from Non-Uniform Rational B-Splines (NURBS), which can exactly represent complicated curved shapes such as circles and cylinders, common features in reactor design. This work has focused on comparing IGA to finite element analysis (FEA) for heterogeneous reactor physics problems, including the OECD/NEA C5G7 LWR benchmark. The exact geometry and increased basis function continuity contribute to the accuracy of IGA and an improvement over comparable FEA calculations has been observed. (C) 2016 The Authors. Published by Elsevier Ltd.

引用

页码：465 / 480

页数：16

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