Flow Characteristics in the Curved Rectangular Channels : Visualization of Secondary Flow

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概要

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• In order to clarify the secondary flow pattern which appears in curved rectangular channels, flow visualization is made in a fully developed laminar flow. The channels have aspect ratios ranging from 0.5 to 2.5,curvature ratios ranging from 5 to 8 and a width of 20mm. From the experimental results the developing process of secondary flow vortices becomes clear. At a retarded layer near the outer concave wall, additional counter rotating pairs of vortices are observed. The critical Dean number takes the minimum and maximum values at the aspect ratios of about 1 and 2,respectively. The critical Dean number increases rapidly with decreasing aspect ratio when it is smaller than 1.

• 一般社団法人日本機械学会の論文

著者

• Hayashi Taro

  Department Of Mechanical Engineering Osaka Institute Of Technology

• Hayashi Taro

  Department Of Electrical And Electronic Engineering Okayama University

• Sugiyama Shiro

  Department Of Mechanical Engineering Osaka Institute Of Technology

• YAMAZAKI Koji

  Sanyo Electric Co., LTD.

• Yamazaki Koji

  Sanyo Electric Co. Ltd.

• Hayashi Taro

  Department of Chemistry Faculty of Science Ochanomizu University

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