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首页> 外文期刊>Journal of Heat Transfer >A Vector Form Exchange-area-based Method For Computation Of Anisotropic Radiative Transfer
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A Vector Form Exchange-area-based Method For Computation Of Anisotropic Radiative Transfer

机译：基于矢量形式交换面积的各向异性辐射传递计算方法

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摘要

Exchange-area-based methods (EAMs), such as the zonal method, the combined Monte-Carlo and zonal method, etc., are widely used in the numerical computation of thermal radiative transfer. In view of their inefficiency in treating with the anisotropy of radiation, researchers have been devoted to developing generalized models (GEAMs). In this article a vector form GEAM is proposed, which has concise formulations, and is found to be very efficient for handling the anisotropic scattering and reflection. In the model some vectorlike weighted-summations take account of the directional distribution of radiant energy. The summations give rise to correction coefficients to the radiosities. The heat transfer problem is solved by a coupled computation of the radiosities and the correction coefficients. The model was validated by both a one-dimensional and a three-dimensional benchmark radiation problem. The computational time is decreased to an order of that for computing isotropic radiation by conventional EAM. Such high efficency has never been achieved by the GEAMs proposed to date.
机译：基于辐射面积的方法（EAMs），例如分区方法，蒙特卡洛方法和分区方法的组合等，被广泛用于热辐射传递的数值计算中。考虑到它们在辐射各向异性处理方面的效率低下，研究人员一直致力于开发通用模型（GEAM）。在本文中，提出了一种矢量形式的GEAM，它具有简洁的公式，并被发现对于处理各向异性散射和反射非常有效。在模型中，一些类似矢量的加权求和考虑了辐射能的方向分布。这些总和产生了辐射度的校正系数。通过对辐射度和校正系数的耦合计算解决了传热问题。通过一维和三维基准辐射问题验证了该模型。计算时间减少到通过常规EAM计算各向同性辐射所需的时间。迄今为止提出的GEAM从未达到过如此高的效率。

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