Local Thermal Non-Equilibrium and Heterogeneity Effects on the Onset of Convection in a Layered Porous Medium

被引:0
|
作者
D. A. Nield
A. V. Kuznetsov
机构
[1] University of Auckland,Department of Engineering Science
[2] North Carolina State University,Department of Mechanical and Aerospace Engineering
来源
Transport in Porous Media | 2014年 / 102卷
关键词
Local thermal non-equilibrium; Porous medium; Instability; Natural convection;
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摘要
The effect of local thermal non-equilibrium on the onset of convection in a porous medium consisting of two horizontal layers is studied analytically. Linear stability theory is applied. Variations of permeability, fluid conductivity, solid conductivity, interphase heat transfer coefficient and porosity are considered. It is found that heterogeneity of permeability and fluid conductivity have a major effect, heterogeneity of interphase heat transfer coefficient and porosity have a lesser effect, while heterogeneity of solid conductivity is relatively unimportant.
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页码:1 / 13
页数:12
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