Onset of Convection with Internal Heating in a Weakly Heterogeneous Porous Medium

被引：26

作者：

Nield, D. A. ^{[1
]}

Kuznetsov, A. V. ^{[2
]}

机构：

[1] Univ Auckland, Dept Engn Sci, Auckland, New Zealand

[2] N Carolina State Univ, Dept Mech & Aerosp Engn, Raleigh, NC 27695 USA

来源：

TRANSPORT IN POROUS MEDIA | 2013年 / 98卷 / 03期

关键词：

Thermal instability; Heterogeneity; Porous medium; NATURAL-CONVECTION; LAYER;

D O I：

10.1007/s11242-013-0158-6

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Linear stability analysis is applied to the onset of convection due to internal heating in a porous medium with weak vertical and horizontal heterogeneity. It is found that the effect of horizontal heterogeneity of each of permeability and thermal conductivity is slightly destabilizing. Increase of permeability in the upward direction is destabilizing and increase in the downward direction is stabilizing, and the reverse is true for increase of conductivity.

引用

页码：543 / 552

页数：10

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