Turbulent Transition Mechanisms of Natural Convection over Upward-Facing Horizontal Plates
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概要
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Turbulent transition mechanisms and heat transfer characteristics of the natural convection over heated, horizontal plate were investigated both experimentally and analytically. An unsteady, 3-D numerical analysis has been performed on the water flow over 150mm-wide plate heated with constant heat flux. The analytical results showed that longitudinal vortices play a crucial role on the turbulent transition over the plate. The vortices appear first in the laminar boundary layer at certain distance from the leading edge. Then, they detach from the plate and become distorted toward downstream. Meanwhile, the flow and temperature fields over the plate were visualized experimentally. The results confirmed that the above transition actually occurs over the plate. Moreover, the local heat transfer coefficients predicted by the analysis coincide well with those measured by the experiments.
- 社団法人日本機械学会の論文
- 2001-02-15
著者
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CHEN Xiao
Department of Applied Physics, Nanjing University of Science & Technology
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Chen Xiao
Department Of Mechanical Engineering Toyohashi University Of Technology
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KITAMURA Kenzo
Department of Mechanical Engineering, Toyohashi University of Technology
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KIMURA Fumiyoshi
Faculty of Engineering, Himeji Institute of Technology
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Chen Xiao
Department Of Applied Physics Nanjing University Of Science And Technology
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Kitamura Kenzo
Department Of Mechanical Engineering Toyohashi University Of Technology
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Kitamura Kenzo
Department Of Biochemistry Nagoya City University Medical School
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Kimura Fumiyoshi
Faculty Of Engineering Himeji Institute Of Technology
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Chen Xiao-An
Department of Mechanical Engineering, Toyohashi University of Technology
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