
第34卷第1期 2014年3月
核科学与工程
Nuclear Science and Engineering
Vol.34No.1
Mar.2014
基于保角变换的六角形中子扩散
半解析节块法及数值结果
李志勇
(上海核工程研究设计院,上海200233)
摘要:基于横向积分技术的率解析节块法,在求解方形中子扩散方程中取得了非常良好的效果。基于横向积分技术的六角形中子扩散间题会遇到奇异间题,面通过采用保角变换理论使该间题得到很好的处理,并能够转化为与方形向题很类似的形式。本文根据保角变换方法,将六角形中子扩方程的求解整合到快速精确的半解析节块方法求解核心中;通过基准间题的数值检验,证明这种方式是相当有效和准确的。
关键调:中子扩散;半解析节块法;六角形;保角变换
中国分类号:TL329
文献标识码:A
文章编号:0258-0918(2014)01-0016-07
Semi-Analytic Nodal Methods and NumericalAnalysis for Neutron
DiffusionHexagonalBasedonConformalMapping
LI Zhi-yong
(Shanghai Nuclear Engineering Research snd Design Institute, Shanghai 200233, Chins)
Abstract:Semi-analytic nodal method based on transverse integration technique obtains very good result in solving the rectangular neutron diffusion problems. The transverse integration technique for hexagonal neutron diffusion problem will encounter singular issue, but this can be well resolved by conformal mapping method and further transferred to similar format as rectangle problems. Based on conformal mapping method, the solution of hexagonal neutron diffusion equation is integrated to the fast, accurate semi-analytic nodal method (kernel) in this paper; by numerical verification of benchmark problems, it is demonstrated that this method is very effective and accurate. Key words;neutrondiffusion; semi-analytic nodal method; hexagonal; conformal mapping
基于中子扩散横向积分技术的现代节块方法在求解方形中子扩散方程方面,经过几十年收稿日期:2012-07-25;修回日期:2013-06-08
的发展,得到了非常广泛的应用并取得了很好的效果。其中,Zimin和Ninokata等采用指
作者简介:李志勇(1981一),男,湖南人,工程师,硕士,现主要从事反应堆物理分析及数值计算工作 16