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http://dx.doi.org/10.5916/jkosme.2009.33.2.244

Heat Transfer and Pressure Drop Characteristics of a Horizontal Channel Filled with Porous Media  

Son, Young-Seok (동의대학교 기계공학과)
Shin, Jee-Young (동의대학교 기계공학과)
Cho, Young-Il (동의대학교 대학원 기계공학과)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.33, no.2, 2009 , pp. 244-251 More about this Journal
Abstract
Porous media have especially large surface area per volume, which contain complex fluid passage. If porous media can be applied to cool a CPU or an electronic device with large heat dissipation, it could result in heat transfer enhancement due to the enlargement of the heat transfer area and the flow disturbance. This study is aimed to identify the heat transfer and pressure drop characteristics of high-porosity metal foams in a horizontal channel. Experiment is performed with the various heat flux, velocity and pore density conditions. Permeabilities, which is deduced from Non-Darcy flow model, become lower with increasing pore density. Nusselt number also decreases with higher pore density. High pore density with same porosity case shows higher pressure loss due to the increase of surface area per unit volume. The fiction factor decreases rapidly with increase of Reynolds number in Darcy flow region. However, it converges to a constant value of the Ergun coefficient in Non-Darcy flow region.
Keywords
Metal foam; Cooling performance; Porosity; Permeability; Pore density; Friction factor;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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