Thermal analysis on metal-foam filled heat exchangers. Part I: Metal-foam filled pipes
Thermal analysis on metal-foam filled heat exchangers. Part I: Metal-foam filled pipes
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DOI：
10.1016/j.ijheatmasstransfer.2005.12.012
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发表时间：
2006-07-01
影响因子：
5.2
通讯作者：
Tassou, S. A.
中科院分区：
文献类型：
--
作者：
Lu, W.;Zhao, C. Y.;Tassou, S. A.
本文对高孔隙率开孔泡沫金属管内的强制对流换热特性进行了分析研究。采用Brinkman扩展Darcy动量模型和多孔介质双方程传热模型。基于该解析解，得到了泡沫金属管内的速度和温度分布。研究了泡沫金属的微观结构对整体传热的影响。结果表明，泡沫金属的孔径和孔隙率对整体传热性能起着重要作用。泡沫金属的使用可以显著地增强传热，但以较高的压降为代价。(c)2006爱思唯尔有限公司保留所有权利。
This paper presents an analytical study of the forced convection heat transfer characteristics in high porosity open-cell metal-foam filled pipes. The Brinkman-extended Darcy momentum model and two-equation heat transfer model for porous media were employed. Based on the analytical solutions, the velocity and temperature distributions in metal-foam filled pipes were obtained. The effects of the microstructure of metal foams on overall heat transfer were examined. The results show that the pore size and porosity of metal-foams play important roles on overall heat transfer performance. The use of metal-foam can dramatically enhance the heat transfer but at the expense of higher pressure drop. (c) 2006 Elsevier Ltd. All rights reserved.