Influence of Cross-sectional Configuration on the Synchronization of Karman Vortex Shedding with the Cylinder Oscillation(Flow around Cylinder)
スポンサーリンク
概要
- 論文の詳細を見る
The influence of cross-sectional configuration of a cylindrical body on the lock-in phenomenon of Karman vortex shedding was investigated using a mechanical oscillator for cross-flow oscillation of the cylinder. A circular, a semi-circular and a triangular cylinder with an equal height were used as test cylinders to see the effect of the movement of the separation point. The lock-in criteria accounting for the spanwise coherency of the Karman vortex were discussed based on the experimental data under a fixed Reynolds number of around 3500. The lock-in region on the plane of non-dimensional cylinder frequency and the non-dimensional amplitude was almost the same for all of the cylinders in spite of differences in the range of the separation point movement. The minimum value of non-dimensional threshold amplitude for lock-in was much smaller than the value of 0.05 which was reported so far. Results obtained in this work imply that the movement of the separation point is a result of the lock-in phenomenon, rather than an essential cause.
- 一般社団法人日本機械学会の論文
- 2002-05-15
著者
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TAKAHASHI Tsutomu
Department of Hematology, Shimane University Faculty of Medicine
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Baranyi Laszlo
Department Of Fluid And Heat Engineering University Of Miskolc
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KOIDE Mizuyasu
Niigata Sangyo University
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TAKAHASHI Tsutomu
Nagaoka University of Technology
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SHIRAKASHI Masataka
Nagaoka University of Technology
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Shirakashi M
Nagaoka University Of Technology
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Shirakashi Masataka
Department Of Mechanical Engineering Nagaoka University Of Technology
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Shirakashi Masataka
Nagaoka Univ. Technol. Nagaoka Jpn
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KOIDE Mizuyasu
Department of Mechanical Engineering, Nagaoka University of Technology
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TOMIDA Shouji
Instruments, HITACHI, Ltd.
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Tomida Shouji
Instruments Hitachi Ltd.
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Takahashi T
Nagaoka University Of Technology
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Takahashi Tsutomu
Department Of Dermatology Kobe University School Of Medicine
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KOIDE Mizuyasu
Department of Mechanical Engineering, Fukushima National College of Technology
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