Initial Stage of a Three-Dimensional Vortex Structure Existing in a Two-Dimensional Boundary Layer Separation Flow : Observation of Laminar Boundary Layer Separation over a Circular Cylinder by Flow Visualization

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概要

• 論文の詳細を見る

• Although it is generally known that the Karman vortex street consists of large-scale vortex structures with three-dimensional characteristics, the causes of the three-dimensional instability have not yet been elucidated. In this study, the three-dimensional characteristics of boundary layer separation around a circular cylinder were observed in water flow by using the laser light sheet technique in the range of Reynolds numbers from 170 to 1340 in a closed-circuit water channel and a towing water tank. As a result, it was determined that the three-dimensional instability of wake flow is based on the three-dimensional characteristics of boundary layer separation around a circular cylinder, which varies with the Reynolds number of the flow.

• 一般社団法人日本機械学会の論文
• 1992-05-15

著者

• Kamemoto Kyoji

  Department of Mechanical Engineering, Yokohama National University

• Kamemoto Kyoji

  Department Of Mechanical Engineering And Materials Science Yokohama National University

• YOKOI Yoshifumi

  Department of Mechanical Engineering, National Defense Academy

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• Initial Stage of a Three-Dimensional Vortex Structure Existing in a Two-Dimensional Boundary Layer Separation Flow : Observation of Laminar Boundary Layer Separation over a Circular Cylinder by Flow Visualization

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