| Project/Area Number |
20360218
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Hydraulic engineering
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| Research Institution | Kyoto University |
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Principal Investigator |
NEZU Iehisa Kyoto University, 大学院・工学研究科, 教授 (30109029)
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| Co-Investigator(Kenkyū-buntansha) |
SANJOU Michio 京都大学, 大学院・工学研究科, 准教授 (80362458)
GOTOH Hitoshi 京都大学, 大学院・工学研究科, 教授 (40243068)
牛島 省 京都大学, 工学研究科, 准教授 (70324655)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥14,820,000 (Direct Cost: ¥11,400,000、Indirect Cost: ¥3,420,000)
Fiscal Year 2010: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2009: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2008: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
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| Keywords | 開水路乱流 / 風波界面現象 / 植生キャノピー流れ / 組織乱流構造 / PIV計測 / ラングミュアー循環流 / 藻波現象 / レーザー流速計 / 風波界面 / 組織渦構造 / ステレオPIV / 植生乱流 / 開水路キャノピー流れ / 乱流 / 開水路 / PIV / 土砂輸送 |
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| Research Abstract |
The present study is to reveal the coherent structure and the associated mass transfer in wind-driven water-waves/free-surface flows over canopy vegetation by using a combination of PIV, PTV and LIF simultaneous measurements. A large-scale secondary current, i.e., Langmuir circulation, is generated in wind-induced free-surface flows and contributes largely to mass transfer in 3D fashion. Furthermore, the present study revealed the interaction between the coherent vortex and the vegetation motion, which is called the Monami phenomenon, and also examined the mass transfer by using simultaneous measurements of velocity and dye concentration.
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