An analytical nodal method for energy multi-group discrete ordinates transport calculations in two-dimensional rectangular geometry

Q4 Energy

International Journal of Nuclear Energy Science and Technology Pub Date : 2018-06-26 DOI:10.1504/IJNEST.2018.10013863

W. Menezes, H. A. Filho, R. Barros

引用次数: 7

Abstract

A spectral nodal method for energy multi-group X, Y-geometry, discrete ordinates (SN) problems in non-multiplying medium is developed. This analytical coarse-mesh method is referred to as the multi-group spectral Green's function - constant nodal (SGF-CN) method. The SGF-CN method uses the multi-group SGF method for numerically solving the one-dimensional transverse-integrated SN nodal equations with constant approximations for the transverse leakage terms. As the energy-group transfer scattering source terms are treated analytically in the offered method, the only approximations occur in the group transverse leakage terms. Numerical results are given to illustrate the method's accuracy for coarse-mesh calculations.

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二维矩形几何中能量多组离散纵坐标输运计算的解析节点法

提出了非乘法介质中能量多群X，Y几何，离散坐标（SN）问题的谱节点法。这种分析粗网格方法被称为多群谱格林函数常数节点（SGF-CN）方法。SGF-CN方法使用多组SGF方法对一维横向积分SN节点方程进行数值求解，并对横向泄漏项进行常数近似。由于在所提供的方法中对能量群转移散射源项进行了解析处理，因此仅在群横向泄漏项中出现近似。给出了数值结果，说明了该方法在粗网格计算中的准确性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Nuclear Energy Science and Technology Energy-Nuclear Energy and Engineering

CiteScore

0.80

自引率

0.00%

发文量

期刊介绍： Today, nuclear reactors generate nearly one quarter of the electricity in nations representing two thirds of humanity, and other nuclear applications are integral to many aspects of the world economy. Nuclear fission remains an important option for meeting energy requirements and maintaining a balanced worldwide energy policy; with major countries expanding nuclear energy"s role and new countries poised to introduce it, the key issue is not whether the use of nuclear technology will grow worldwide, even if public opinion concerning safety, the economics of nuclear power, and waste disposal issues adversely affect the general acceptance of nuclear power, but whether it will grow fast enough to make a decisive contribution to the global imperative of sustainable development.