Numerical analysis of radiation effects in a metallic foam by means of the radiative conductivity model

被引：11

作者：

Andreozzi, Assunta ^{[1
]}

Bianco, Nicola ^{[1
]}

Manca, Oronzio ^{[2
]}

Naso, Vincenzo ^{[1
]}

机构：

[1] Univ Naples Federico II, DETEC, I-80125 Naples, Italy

[2] Univ Naples 2, DIAM, I-81031 Aversa, CE, Italy

来源：

APPLIED THERMAL ENGINEERING | 2012年 / 49卷

关键词：

Radiation heat transfer; Radiative conductivity; Porous media; Metallic foams; FILLED HEAT-EXCHANGERS; THERMAL-CONDUCTIVITY; INSULATION;

D O I：

10.1016/j.applthermaleng.2011.09.024

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The aim of this work is the evaluation of the radiation contribution to the steady-state heat transfer in metallic foams by means of the radiative conductivity model. Because of the complexity of the structure, reference is made to a simplified physical radiative model, where the elementary cell of the foams is treated as a cubic cell. The contribution of the radiation heat transfer is investigated on a local basis. The local radiative conductivity has been used to evaluate the influence of radiative heat transfer in a two dimensional conductive-convective-radiative problem involving a forced fluid flow within a heated channel filled with a metallic foam. The effect of the solid emissivity and the foam porosity is pointed out for different foams. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：14 / 21

页数：8

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[3]

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