Development of Planar Mixing Layers Confined in Expanding and Reducing Ducts
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概要
- 論文の詳細を見る
Development of planar mixing layers confined to expanding and reducing ducts was studied by a visualization system which enabled time-resolving two-dimensional concentration measurement. Water mist was used as a tracer and a laser sheet was passed through the planar mixing layers confined to expanding, parallel, and reducing ducts. The scattered light was detected by a high-speed framing image sensor, and analyzed to obtain instantaneous pictures and statistical quantities of concentration, such as mean value, fluctuation intensity, spatial correlation, and frequency spectra. It was found that a planar mixing layer in the expanding duct developed faster than in parallel and reducing ducts because the distance between roll-up vortices was reduced by decrease of the flow velocity and thus the interaction of the vortices became stronger. On the other hand, a planar mixing layer in the reducing duct developed more slowly due to the increased distance between the vortices and their weaker interaction.
- 一般社団法人日本機械学会の論文
- 1994-08-15
著者
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HASEGAWA Tatsuya
Department of Environmental Biochemistry, Yamanashi Institute of Environmental Sciences
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YAMAGUCHI Shigeki
Department of Mechanical Engineering, Nagoya Institute of Technology
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Hasegawa Tatsuya
Department Of Environmental Biochemistry Yamanashi Institute Of Environmental Sciences
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Hasegawa T
Nippon Furnace Kogyo Kaisha Ltd. Yokohama Jpn
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Gotoh Hironaga
Department of Mechanical Engineering, Nagoya Institute of Technology
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Gotoh Hironaga
Department Of Mechanical Engineering Nagoya Institute Of Technology
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Yamaguchi Shigeki
Department Of Anesthesiology Dokkyo Medical University
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Yamaguchi Shigeki
Department Of Mechanical Engineering Nagoya Institute Of Technology
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