Laminar film condensation on a horizontal wavy plate embedded in a porous medium

被引：15

作者：

Chang, Tong Bou ^{[1
]}

机构：

[1] So Taiwan Univ Technol, Dept Engn Mech, Tainan, Taiwan

来源：

INTERNATIONAL JOURNAL OF THERMAL SCIENCES | 2008年 / 47卷 / 01期

关键词：

capillary effect; wavy plate; porous medium;

D O I：

10.1016/j.ijthermalsci.2007.01.006

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The problem of two-dimensional, steady-state film condensation on an isothermal finite-size horizontal wavy plate embedded in a porous medium is studied for the case in which the plate faces upward into a region of dry saturated vapor. Due to capillary effects, a two-phase zone is formed between the liquid film on the cold plate and the vapor zone. Taking the sand-water-steam system for illustration purposes, the results indicate that the inclusion of capillary effects in the liquid film analysis has a significant effect on the computed results for the heat transfer coefficient. The results also reveal that the wave number and the wave amplitude of the wavy plate both have a significant effect on the mean Nusselt number, (Nu) overbar. (C) 2007 Elsevier Masson SAS. All rights reserved.

引用

页码：35 / 42

页数：8

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