GENERAL SIMILARITY TRANSFORMATION FOR COMBINED FREE AND FORCED-CONVECTION FLOWS WITHIN A FLUID-SATURATED POROUS MEDIUM.

被引：0

作者：

Nakayama, A. ^{[1
]}

Koyama, H. ^{[1
]}

机构：

[1] Shizuoka Univ, Hamamatsu, Jpn, Shizuoka Univ, Hamamatsu, Jpn

来源：

Journal of Heat Transfer | 1987年 / 109卷 / 04期

关键词：

HEAT TRANSFER - Convection;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

It is the purpose of this paper to introduce a general transformation procedure appropriate to the problem of combined free and forced convection in a porous medium. It is shown that particular transformations proposed in the previous papers are simply the specific forms of the present general transformation. Pure forced convection will be treated first as a limiting case of combined free and forced convection. The analysis reveals that any two-dimensional or axisymmetric body of arbitrary shape possesses its corresponding class of wall temperature distributions which permit similarity solutions. Secondly, combined free and forced convection will be considered to seek similarity solutions. It is found that, unlike in pure forced convection, similarity solutions in mixed convection are possible only when the external free-stream velocity varies everywhere in proportion to the product of the streamwise component of the gravity force and the wall-ambient temperature difference. Refs.

引用

页码：1041 / 1045