离散坐标系中板几何中性粒子输运问题的响应矩阵求解器和考虑非均匀内源的能量多组公式

IF 0.7 4区工程技术 Q3 MATHEMATICS, APPLIED

Journal of Computational and Theoretical Transport Pub Date : 2023-01-02 DOI:10.1080/23324309.2023.2194294

L.R.C. Moraes, R. Barros, R. Vasques

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引用次数: 0

摘要

摘要在这项工作中，我们提出了响应矩阵（RM）方法的扩展，用于离散坐标（S）中的平板几何中性粒子输运方程的数值解和考虑非均匀源的能量多群公式。使用术语非均匀，我们的意思是粒子源在组成域的区域内的空间不均匀。与传统的RM方法不同，扩展的RM方法基于“源无关”辅助问题（格林函数）的求解。这些辅助问题的解与给定的非均匀源一起用于生成扩展RM方法的扫描矩阵。给出了均匀和非均匀源问题的数值结果，以说明所提供的扩展RM方法的有效性。

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On a Response Matrix Solver for Slab-Geometry Neutral Particle Transport Problems in the Discrete Ordinates and Energy Multigroup Formulations Considering Non-Uniform Interior Sources

Abstract We present in this work an extension of the Response Matrix (RM) method for the numerical solution of slab-geometry neutral particle transport equation in the discrete ordinates (S ) and energy multigroup formulations considering non-uniform sources. By using the term non-uniform we mean that the particle source is not spatially uniform inside the regions that compose the domain. The extended RM method, differently from the conventional RM method, is based on the solution of “source-independent” auxiliary problems (Green’s functions). The solution of these auxiliary problems is used in conjunction with the given non-uniform source to generate the sweeping matrices for the extended RM method. Numerical results with respect to both uniform and non-uniform source problems are given to illustrate the efficiency of the offered extended RM method.

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来源期刊

Journal of Computational and Theoretical Transport Mathematics-Mathematical Physics

CiteScore

1.30

自引率

0.00%

发文量

期刊介绍： Emphasizing computational methods and theoretical studies, this unique journal invites articles on neutral-particle transport, kinetic theory, radiative transfer, charged-particle transport, and macroscopic transport phenomena. In addition, the journal encourages articles on uncertainty quantification related to these fields. Offering a range of information and research methodologies unavailable elsewhere, Journal of Computational and Theoretical Transport brings together closely related mathematical concepts and techniques to encourage a productive, interdisciplinary exchange of ideas.