National Taiwan Ocean University Institutional Repository:Item 987654321/24442
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题名: Emergence of Attached Recirculating Eddy for Flow around a Circular Cylinder Asymmetrically Placed in a Channel
作者: Tsung-Chan Hsieh;Jiahn-Horng Chen
贡献者: NTOU:Department of Systems Engineering and Naval Architecture
國立臺灣海洋大學:系統工程暨造船學系
关键词: circular cylinder;asymmetry;recirculating flow;laminar separation;channel flow
日期: 2006
上传时间: 2011-10-20T08:12:20Z
出版者: Journal of Marine Science and Technology
摘要: Abstract:This study discusses the emergence and development of cylinder-attached recirculating regions appearing in a fully developed flow past a circular cylinder asymmetrically confined between two infinite parallel plates. We employed a finite-volume method with the SIMPLE algorithm to compute the flow fields for various sizes and asymmetrical settings of circular cylinders. Two geometrical parameters, the blockage and asymmetry coefficients, are varied in computations. A series of computations show that the flow evolves a single asymmetrical recirculating region for the Reynolds number beyond some critical value. Its development in length bears a linear relation to the Reynolds number. Its growth rate depends on the two geometrical parameters. In addition, the computations also show that as the cylinder is moved toward one of the plates, the critical Reynolds number becomes larger. It seems to imply that the existence of lateral plate delays the formation of recirculating region.
關聯: 14(3), pp.147-154
URI: http://ntour.ntou.edu.tw/handle/987654321/24442
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