The Effect of Vertical Throughflow on the Onset of Convection Induced by Internal Heating in a Layered Porous Medium

被引：9

作者：

Kuznetsov, A. V. ^{[1
]}

Nield, D. A. ^{[2
]}

机构：

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

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

来源：

TRANSPORT IN POROUS MEDIA | 2013年 / 100卷 / 01期

关键词：

Throughflow; Heterogeneity; Instability; Horizontal layers; Internal heating; INSTABILITY;

D O I：

10.1007/s11242-013-0207-1

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

We present an analytical investigation of the effect of vertical throughflow on the onset of convection, induced by internal heating, in a composite porous medium consisting of two horizontal layers. If convection is induced by internal heating, the bulk of the convection occurs in the upper half of the layer where the buoyancy force is destabilizing. For the case of heterogeneous porous medium, if the permeability increases in the upward direction, or if the thermal conductivity decreases in the upward direction, instability is increased. It is also found that upward throughflow is stabilizing but a modest amount of downward throughflow is destabilizing.

引用

页码：101 / 114

页数：14

共 50 条

[1] The Effect of Vertical Throughflow on the Onset of Convection Induced by Internal Heating in a Layered Porous Medium
A. V. Kuznetsov
D. A. Nield
[J]. Transport in Porous Media, 2013, 100 : 101 - 114
[2] The Onset of Convection in a Layered Porous Medium with Vertical Throughflow
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[J]. Transport in Porous Media, 2013, 98 : 363 - 376
[3] The Onset of Convection in a Layered Porous Medium with Vertical Throughflow
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[J]. Transport in Porous Media, 2013, 99 : 85 - 100
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