The Effect of Strong Heterogeneity on the Onset of Convection in a Porous Medium: Periodic and Localized Variation

被引：17

作者：

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

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

Simmons, Craig T. ^{[3
]}

机构：

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

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

[3] Flinders Univ S Australia, Sch Chem Phys & Earth Sci, Adelaide, SA 5001, Australia

来源：

TRANSPORT IN POROUS MEDIA | 2010年 / 81卷 / 01期

关键词：

Heterogeneity; Stability; Natural convection; Computer package; Periodic variation; Localized variation; VERTICAL HETEROGENEITY; FLOW;

D O I：

10.1007/s11242-009-9390-5

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The effect of strong heterogeneity on the onset of convection induced by a vertical density gradient in a saturated porous medium governed by Darcy's law is investigated. The general case, where there is heterogeneity in both the vertical and horizontal directions, and where there is heterogeneity in permeability, thermal conductivity, and applied temperature gradient, is considered. A computer package has been developed to implement an algorithm giving a criterion for instability, and this is now employed to investigate the case where the variation is of a periodic or localized nature.

引用

页码：123 / 139

页数：17

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