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ISSN Online: 2377-424X

International Heat Transfer Conference 12
August, 18-23, 2002, Grenoble, France

Experimental determination of the heat transfer and fluid flow characteristics of open-cellular porousmaterials

Get access (open in a dialog) DOI: 10.1615/IHTC12.4710
6 pages

Abstract

The pressure-loss characteristics of open-cellular cordierite-alumina and Ni-Cr foams were measured and general correlations of the pressure-loss parameters were proposed based on available experimental data including the present ones. Then, the axial thermal dispersion conductivities of cordierite-alumina porous materials were determined by an inverse analysis of steady-state axial temperature profiles of cylindrical open-cellular cordierite-alumina foams heated radiatively by infrared lamps on their upper surfaces. Finally, the volumetric heat transfer coefficients of cordierite-alumina porous media not including the effect of axial thermal dispersion were determined by a single-blow method. It is found that the axial thermal dispersion coefficient is about 1600 times greater than the radial one and that, when the volumetric heat transfer coefficient is determined by a single-blow method on the basis of the energy equations disregarding the axial thermal dispersion term, the obtained volumetric heat transfer coefficient is underestimated.