H107 INFLUENCE OF THE HYDRAULIC BOUNDARY LAYER ON THE CONVECTIVE HEAT TRANSFER IN POROUS MEDIA(Electronics cooling-2)

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概要

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• Convective heat transfer in a channel filled with porous media has been analyzed in this paper. The two-equation model is applied for the heat transfer analysis with the velocity profile considering both the inertia and viscous effects. Based on the theoretical solution, the effect of the velocity profile on the convective heat transfer is investigated in detail. The Nusselt number is obtained in terms of the relevant physical parameters, such as the Biot number for the internal heat exchange, the ratio of effective conductivities between the fluid and solid phases, and the thickness of the hydraulic boundary layer. The results indicate that the influence of the velocity profile is characterized within two regimes according to the two parameters, the Biot number and the conductivity ratio between the phases. The decrease in the heat transfer due to the hydraulic boundary layer thickness is 15% at most within a practical range of the pertinent parameters.

• 一般社団法人日本機械学会の論文
• 2000-10-01

著者

• Kang Byung

  Thermal

• Lee Dae-Young

  Thermal

• Jin Jae-Sik

  Flow Control Research Center, Korea Institute of Science and Technology

• Jin Jae-sik

  Flow Control Research Center Korea Institute Of Science And Technology

関連論文

• C203 TRANSIENT HEAT TRANSFER IN POROUS MEDIA UNDER OSCILLATING FLOW CONDITION(Heat transfer in complex system-2)
• H107 INFLUENCE OF THE HYDRAULIC BOUNDARY LAYER ON THE CONVECTIVE HEAT TRANSFER IN POROUS MEDIA(Electronics cooling-2)
• E206 EFFECTS OF HYDROPHILIC SURFACE TREATMENT ON EVAPORATION HEAT TRANSFER AT THE OUTSIDE WALL OF ENHANCED TUBES(Evaporation-1)
• H212 THERMAL PERFORMANCE OF A RESONANT COOLING DEVICE FOR CPU IN A PERSONAL COMPUTER(Electronics cooling-3)
• H211 HEAT TRANSFER FROM AN ALUMINUM FOAM HEAT SINK FOR ELECTRONICS COOLING(Electronics cooling-3)

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