| 三维六角形粗网格中子扩散计算方法 |
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| 引用本文： | 刘旭东. 三维六角形粗网格中子扩散计算方法[J]. 核动力工程, 1988, 0(1) |
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| 作者姓名： | 刘旭东 |
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| 摘 要： | 本文介绍对于由六角形栅元组件组成的核反应堆堆芯,采用三维粗网格展开法求解中子扩散方程,推导出九点高阶近似差分方程。该方程形式上与低阶有限差分方程类似,可以采用低阶有限差分法的求解技巧求解,所建立的方法适用于两维或三维中子扩散计算,对堆芯设计和燃耗分析很有意义。
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| 关 键 词： | 粗网格展开法 试探函数 界面中点通量 子区域 |
3D-Hexagon Coarse Mesh Neutron Diffusion Calculation Method |
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| Liu Xudong. 3D-Hexagon Coarse Mesh Neutron Diffusion Calculation Method[J]. Nuclear Power Engineering, 1988, 0(1) |
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| Authors: | Liu Xudong |
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| Abstract: | This paper describes that 3D-coarse mesh expansion method is used tosolve neutron diffusion equation for nuclear reactor core which is composed ofhexagon lattice assembly,and to obtain a nine point high order finite differe-nce equation.It's form is similar to low order finite difference equation.Thenine point high order finite difference equation can be solved through use ofsolving technology of low order finite difference equation.The founded methodapply to 2D or 3D-neutron diffusion calculation.It is very significant fornuclear core design and depletion analysis. |
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| Keywords: | Coarse mesh expansion method Trial function Centrical point flux at the interface Subregion |
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