Experimental study on heat transfer of combined free and forced laminar convection in thermal entrance region of horizontal rectangular ducts.
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概要
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Experimental studies by the electrochemical method were made to investigate the heat transfer problems of combined free and forced laminar convection for high Pr fluid in the thermal entrance region of rectangular ducts with the aspect ratio Υ=0.5, where the boundary condition of uniform wall temperature has been used. Experimental data for the local and mean Nu were compared with analytical solutions obtained by developing Leveque''s method and the numerical one, and the following conclusions were reached: i) for the region of forced convection in which the effect of free convection approaches zero, the experimental results are well-correlated with the analytical results obtained by developing Leveque''s method; ii) for the region where the effect of free convection exists, the experimental results are in satisfactory agreement with the numerical ones; and iii) for the onset of free convection effects, both experimental and numerical results are also in good agreement with the original correlative equation suggested by Ou et al.
- 公益社団法人 化学工学会の論文
著者
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HIRAOKA Setsuro
Department of Applied Chemistry, Nagoya Institute of Technology
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Yamada Ikuho
Department Of Applied Chemistry Nagoya Insitute Of Technology
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Nakamura Hajime
Department Of Biological Responses Institute For Virus Research Kyoto University
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Matsuura Akihiro
Department Of Animal Science School Of Veterinary Medicine Kitasato University
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KIWAKI JUMEI
Department of Mechanical Engineering, Daido Institute of Technology
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YAMADA IKUHO
Department of Industrial Chemistry, Nagoya Institute of Technology
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