Numerical study of heat transfer in an optically thick semi-transparent spherical porous medium

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• 作者：Ché ; rif ; B. ; Sifaoui ; M.S.
• 关键词：Conduction ; Radiation ; Convection ; Porous medium ; Optically thick ; Spherical geometry
• 刊名：Journal of Quantitative Spectroscopy and Radiative Transfer
• 出版年：2005
• 出版时间：March 15, 2005
• 年：2005
• 卷：91
• 期：3
• 页码：363-372
• 全文大小：409 K

文摘

In this paper, heat transfer by simultaneous convection, conduction and radiation in a semi-transparent spherical porous medium is investigated. The ROSSELAND approximation is adopted to take account of radiation in the heat transfer rate. The routine used here to solve the set of differential equations is taken from the IMSL MATH/LIBRARY. Various results are obtained for the dimensionless temperature profiles in the solid and fluid phases, the radiative, conductive, convective and total heat fluxes. The effects of some radiative properties of the medium on the heat transfer rate are examined.