THE EFFECT OF ANISOTROPIC PERMEABILITY ON FREE CONVECTIVE BOUNDARY-LAYER FLOW IN POROUS-MEDIA

被引：25
|
作者：
REES, DAS [1 ]
STORESLETTEN, L [1 ]
机构：
[1] AGDER REG COLL,DEPT MATH,KRISTIANSAND,NORWAY
来源：
TRANSPORT IN POROUS MEDIA | 1995年 / 19卷 / 01期
关键词：
POROUS MEDIUM; CONVECTION; BOUNDARY LAYER; ANISOTROPY; PERMEABILITY;
D O I：
10.1007/BF00716050
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The effect of an anisotropic permeability on thermal boundary layer flow in porous media is studied. The convective flow is induced by a vertical, uniformly heated surface embedded in a fluid-saturated medium. A leading-order boundary layer theory is presented. It is shown that the thickness of the resulting boundary layer flow is different from that obtained in an isotropic porous medium. In general, an anisotropic permeability induces a fluid drift in the spanwise direction, the strength of which depends on the precise nature of the anisotropy. Conditions are found which determine whether or not the boundary layer flow is three-dimensional.
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页码：79 / 92
页数：14
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