2011 Fiscal Year Final Research Report
Vortical structures and chaos, turbulence transition in two-and three-dimensional wakes containing micro-bubbles
| Project/Area Number |
20560161
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Fluid engineering
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| Research Institution | Okayama University |
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Principal Investigator |
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| Project Period (FY) |
2008 – 2011
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| Keywords | 混相流 / 後流 / マイクロバブル / 抵抗低減 / カオス / 乱流 / 遷移 |
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| Research Abstract |
Vortical structures, chaos and turbulence transition in two-and three-dimensional wakes were investigated experimentally and numerically. At first we conducted a series of experiment of micro-bubble flows through circular straight and helical pipes. Apparent drug reduction and relaminarization were observed, and reduction of thermal conduction was also seen. A new spectral code was written, by using which stationary and oscillating solutions were obtained with high accuracy.
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Research Products
(19 results)
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[Presentation] 円柱後流の不安定周期運動2009
Author(s)
藤原裕己, 渡辺毅(広島大), 河原源太(大阪大), 百武徹, 柳瀬眞一郎
Organizer
第26回西日本乱流シンポジウム
Place of Presentation
岡山理科大学,岡山市
Year and Date
2009-08-25
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