New aspects of the diffusion approximation for radiative transfer

被引：4
|
作者：
Tschudi, Hans Rudolf [1 ]
机构：
[1] Paul Scherrer Inst, CH-5232 Villigen, Switzerland
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2008年 / 51卷 / 19-20期
关键词：
radiative transport; participating media; diffusion approximation; heat conduction;
D O I：
10.1016/j.ijheatmasstransfer.2008.01.029
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The diffusion approximation is generalized to arbitrary locally isotropic participating media. It proves to be an approximate special solution of the full equation of radiative transfer accounting for absorption, scattering, and emission. This special Solution must be completed with a Solution of the radiative transfer equation without emission term in order to match the boundary conditions for the radiative field. Applied to combined heat and radiative transfer this scheme offers distinct computational advantages and broad applicability. Following these ideas a simple and robust method for one-dimensional radiation-conduction computations is constructed and verified. (C) 2008 Elsevier Ltd. All rights reserved.
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页码：5008 / 5017
页数：10
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