The Effect of Time-Periodic Surface Temperature Oscillations on Free Convection from a Vertical Surface in a Porous Medium

被引：0

作者：

M. A. Hossain

I. Pop

D. A. S. Rees

机构：

[1] University of Dhaka,Department of Mathematics

[2] University of Cluj,Faculty of Mathematics

[3] University of Bath,Department of Mechanical Engineering

来源：

Transport in Porous Media | 2000年 / 39卷

关键词：

unsteady; natural convection; vertical surface;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In this paper, we consider the unsteady free convection boundary layer flow which is induced by time-periodic variations in the surface temperature of a vertical surface embedded in a porous medium. The basic steady flow is that of a power-law distribution where the surface temperature varies as the nth power of the distance from the leading edge. Small-amplitude time-periodic disturbances are added to this basic distribution. Both the low- and high-frequency limits are considered separately, and these are compared with a full numerical solution obtained by using the Keller-box method. Attention is restricted to the cases n≤1; when n=1, the flow is locally self-similar for any prescribed frequency of modulation.

引用

页码：119 / 130

页数：11

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