JAXA Repository / AIREX 未来へ続く、宙(そら)への英知
64237011.pdf3.64 MB
Other TitleDeformation mode of vortices in the wake behind a two dimensional body
Author(jpn)大藏, 信之; 奥出, 宗重
Author(eng)Okura, Nobuyuki; Okude, Muneshige
Author Affiliation(jpn)名城大学理工学部; 名城大学理工学部
Author Affiliation(eng)Faculty of Science and Technology, Meijo University; Faculty of Science and Technology, Meijo University
Issue Date2009-02-27
PublisherJapan Aerospace Exploration Agency (JAXA)
Publication titleJAXA special publication: Proceedings of the 41st and 42nd JAXA Workshops on Investigation and Control of Boundar-Layer Transition
宇宙航空研究開発機構特別資料: 境界層遷移の解明と制御研究会講演論文集(第41回・第42回)
Publication date2009-02-27
AbstractThe three-dimensional deformation of the vortices behind a two dimensional body was investigated by using flow visualization technique. In the case of a flat plate perpendicular to the uniform flow, the wavy deformation of the vortex filament was observed in the far wake. In the case of an inclined plate, the rib structures appeared in regular intervals to the axial direction in a vortex filament at the near wake. The ribs generate around a pair of vortex filaments which are shedding alternately from a plate. The absolute value of circulation of alternate vortex was different from each other in a pair of vortices in the case of an inclined plate. It seems that three dimensional deformation of vortex in the near wake is caused by difference of circulation of alternate vortex. The similar phenomenon was observed in the wake behind a circular cylinder oscillating in the streamwise direction.
Description形態: カラー図版あり
会議: 第41回「境界層遷移の解明と制御」研究会(2007年10月4日-10月5日)
Keywordswake, vortex flow, laminar-turbulent transition, flow visualization
Document TypeTechnical Report
JAXA Category特別資料
Report NoJAXA-SP-08-006

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