ISSN Online: 2377-424X
ISBN Print: 978-1-56700-421-2
International Heat Transfer Conference 15
Analysis of Heat Transfer in a 2-D Cylindrical Porous Medium
摘要
This paper deals with the numerical analysis of combined mode transient conduction and radiation heat transfer in a 2-D cylindrical porous medium. Porous medium contains a spatially dependant constant heat generation source. Non-local thermal equilibrium between the gas- and the solid-phase is accounted by coupled energy equations for gas- and the solid-phase. The two energy equations are coupled through the convective term. Gases being radiatively poor, the volumetric radiative source term, in the form of divergence of radiative heat flux, appear only in the solid-phase energy equation. The finite volume method is used to compute the volumetric radiative information needed in the solid-phase energy equation. With the gas velocity field known, the two energy equations are simultaneously solved using the finite difference method based alternating direction implicit scheme. Effects of various governing parameters such as the optical thickness, the conductivity, the convective heat transfer coefficient and the location of heat generation zone are analyzed on the distributions of axial temperature. Effects of aspect ratio on temperature, conductive, convective, radiative and total thermal outputs are also analyzed.