Analysis of fluid flow and heat transfer in a double pipe heat exchanger with porous structures

N. Targui; H. Kahalerras

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Analysis of fluid flow and heat transfer in a double pipe heat exchanger with porous structures

机译：多孔结构双管换热器中的流体流动和传热分析

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A numerical study of flow and heat transfer characteristics is made in a double pipe heat exchanger with porous structures inserted in the annular gap in two configurations: on the inner cylinder (A) and on both the cylinders in a staggered fashion (B). The flow field in the porous regions is modelled by the Darcy-Brinkman-Forchheimer model and the finite volume method is used to solve the governing equations. The effects of several parameters such as Darcy number, porous structures thickness and spacing and thermal conductivity ratio are considered in order to look for the most appropriate properties of the porous structures that allow optimal heat transfer enhancement. It is found that the highest heat transfer rates are obtained when the porous structures are attached in configuration B especially at small spacing and high thicknesses.

机译：在双管式换热器中对流动和传热特性进行了数值研究，多孔结构以两种构造插入环形间隙中：内筒（A）和两个筒上交错排列（B）。用Darcy-Brinkman-Forchheimer模型对多孔区域中的流场进行建模，并使用有限体积法求解控制方程。考虑了诸如达西数，多孔结构的厚度和间距以及导热率之类的几个参数的影响，以便寻找允许最佳传热的多孔结构的最合适的性能。已经发现，当多孔结构以结构B连接时，尤其是在小间距和高厚度下，可获得最高的传热率。

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来源
《Energy Conversion & Management》 |2008年第11期|p.3217-3229|共13页
作者
N. Targui; H. Kahalerras;
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作者单位

Faculty of Mechanical and Process Engineering, Houari Boumediene University of Sciences and Technology, B.P. 32, El Alia, Bab Ezzouar, 16111 Algiers, Algeria;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类能源与动力工程;
关键词
double pipe heat exchanger; porous structures; heat transfer enhancement;

机译：双管换热器;多孔结构;传热增强;

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Analysis of fluid flow and heat transfer in a double pipe heat exchanger with porous structures

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