Natural convection in metal foam strips with internal heat generation

被引：28
|
作者：
Hetsroni, G. [1 ]
Gurevich, M. [1 ]
Rozenblit, R. [1 ]
机构：
[1] Technion Israel Inst Technol, Dept Mech Engn, IL-32000 Haifa, Israel
来源：
EXPERIMENTAL THERMAL AND FLUID SCIENCE | 2008年 / 32卷 / 08期
关键词：
heat transfer; metal foam; natural convection; infrared measurement; enhancement; porosity;
D O I：
10.1016/j.expthermflusci.2008.06.011
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Natural convection heat transfer in metal foam strips, with internal heat generation, was investigated experimentally for two porosities. An estimate of the non-equilibrium temperature distribution was done by image processing of the thermal maps on both the surface and the inner region of the metal foam specimen. It was shown that heat transfer at natural convection in the strip of metal foam was increased drastically (up to 18-20 times for metal foam of 20 ppi) relative to the flat plate of the same overall dimensions. The heat transfer from ligaments of metal foam was estimated. (C) 2008 Elsevier Inc. All rights reserved.
引用
收藏
页码：1740 / 1747
页数：8
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