Nagoya Institute of Technology Department of Mechanical Engineering, Faculty of Engineering
Nagoya Institute of Technology Department of Mechanical Engineering, Faculty of Engineering
出版者
航空宇宙技術研究所
出版者（英）
National Aerospace Laboratory (NAL)
雑誌名
航空宇宙技術研究所特別資料: 第28回境界層遷移の解明と制御研究会講演論文集
雑誌名(英)
Special Publication of National Aerospace Laboratory: Proceedings of the 28th NAL Workshops on Investigation and Control of Boundary-Layer Transition
巻
54
ページ
21 - 24
発行年
2002-01
抄録（英）
The laminar-turbulent transition of spherical Couette flow between two independently rotating concentric spheres for the gap ratio 0.14 where the Taylor instability occurs was investigated by simultaneous spectral and flow-visualization measurements. The conclusions are as follows. Rotation frequencies of disturbances do not so depend on the ratio of the outer- to the inner-sphere rotating Reynolds number if they are non-dimensionalized by the mean rotation frequency of both spheres. Herring-bone waves and wavy shear waves appear with increasing rotation effect for the co-rotating spheres, while spiral vortices and twists appear with increasing shear effect for the counter-rotating spheres. Flow regimes and their occurrence-region in the plane of the inner- and outer-sphere rotating Reynolds numbers differ by the Reynolds-number history.
独立に回転する同心2球間の流れ
nalsp0054006.pdf
(1.71MB)
