Effects of Variable Physical Properties on Free Convection in a Porous Insulating Layer

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概要

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• A numerical study is made of the effects of variable properties on free convection in vertical, 'herium-(or air-) saturated porous layer. The temperature differences between hot and cold boundary walls are as large as 1000℃. The effects of variations in viscosity, thermal conductivity and density are included. Flow patterns are found to be considerably distorted in a horizontal direction to the symmetrical patterns predicted by the constant-property theory, whereas the overall heat-transfer characteristics do not alter very much provided that representative properties are evaluated at a mean temperature. At sufficiently large amplitude of convection, however, the deviation from the Boussinesq approximation is not negligible.

• 一般社団法人日本機械学会の論文

著者

• Okamoto Yoshizo

  Div. Of High Temperature Engineering Japan Atomic Energy Research Institute

• Shimomura Hiroaki

  Div. Of High Temperature Engineering Japan Atomic Energy Research Institute

• Masuoka Takashi

  Dept. Of Mechanical Engineering Kyushu Institute Of Technology

関連論文

• Effects of Variable Physical Properties on Free Convection in a Porous Insulating Layer
• Condensation Process at Liquid-Vapor Interface and Condensation Coefficient
• Critical Heat Flux of Boiling Heat Transfer in a Confined Space
• Chaotic Behaviors of Forced Convection in Porous Media

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