Institute of Flow Research
Institute of Flow Research
Institute of Flow Research
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: 境界層遷移の解明と制御研究会講演論文集 第29回・第30回
雑誌名(英)
Special Publication of National Aerospace Laboratory: Proceedings of the 29th and 30th NAL Workshops on Investigation and Control of Boundary-Layer Transition
巻
56
ページ
75 - 76
発行年
2002-12
抄録（英）
There is a long-lasting debate about the structure of the wake behind a sphere. It is insisted that the wake is composed of a successive circular vortex ring. Conflicting opinion is that the wake is something like a screw with axis in the flow direction. The present research was carried out for contributing to the debate. The flow was observed in a water tunnel by the hydrogen bubble technique. The hot-wire flow meter was also employed. The Reynolds number covers from 100 to 1,000. In order to obtain more general view, flows behind a flat circular disk and behind an axisymmetrical stream-line body. The tentative answer to the flow question is that both kinds of wake structure are possible depending on the mode of residual disturbance in the flow.
小さなレイノルズ数での球のまわりの流れ
nalsp0056023.pdf
(4.2MB)
