The Effect of Pulsating Deformation on the Onset of Convection in a 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 | 2013年 / 98卷

关键词：

Deforming porous medium; Thermal instability; Pulsating permeability;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A linear instability analysis has been performed for the onset of convection in a horizontal layer of a porous medium whose permeability pulsates with time as a result of vertical movement of one of the boundaries. It was found that, to a first-order approximation in the pulsation amplitude, the effect of deformation is destabilizing for disturbances whose period is of the order of the thermal diffusion time scale. The effects of the average porosity, pulsation amplitude, and pulsation frequency were investigated.

引用

页码：713 / 724

页数：11

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