Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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Heat Transfer and Pressure Drop Characteristics of a Horizontal Channel Filled with Porous Media

다공성매질을 삽입한 수평채널의 열전달 및 압력강하 특성

  • 손영석 (동의대학교 기계공학과) ;
  • 신지영 (동의대학교 기계공학과) ;
  • 조영일 (동의대학교 대학원 기계공학과)
  • Published : 2009.03.31
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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.

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Cited by

  1. Numerical Analysis on the Heat Transfer and Pressure Drop Characteristics of a Channel with Pin-fin Structure vol.35, pp.2, 2011, https://doi.org/10.5916/jkosme.2011.35.2.224
  2. Experimental Study of Pressure Drop in Compressible Fluid through Porous Media vol.37, pp.8, 2013, https://doi.org/10.3795/KSME-B.2013.37.8.759