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Diffuse conditions for efficient solution of multislab radiation transport problems

机译:有效解决多平板辐射传输问题的扩散条件

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In this article, we make use of recently developed spectral nodal methods for anisotropically scattering media and we derive mathematical conditions for the diffuse reflection and transmission of radiation in the discrete ordinates formulation of particle transport theory for plane-parallel applications. The conditions arise from a suitable reformulation of spatially discretized equations defined on the boundary layers of a multislab domain. As a result, the boundary layers can be removed from the radiation transport calculations and replaced with exact and numerically stable equivalent conditions. In order to illustrate the applicability and computational merit of our discrete ordinates conditions for diffuse reflection and transmission in radiation transport calculations, we perform numerical experiments with atmospheric radiative transfer and nuclear reactor core models. (C) 2008 Elsevier B.V. All rights reserved.
机译:在本文中,我们利用各向异性散射介质的最新开发的光谱节点方法,并在平面平行应用的粒子传输理论的离散纵坐标公式中得出了辐射的漫反射和透射的数学条件。这些条件来自对在多平板区域的边界层上定义的空间离散方程式的适当重新表述。结果,可以将边界层从辐射传输计算中删除,并替换为精确且数值稳定的等效条件。为了说明我们的离散纵坐标条件在辐射传输计算中的漫反射和透射的适用性和计算优点,我们使用大气辐射传输和核反应堆堆芯模型进行了数值实验。 (C)2008 Elsevier B.V.保留所有权利。

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