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Coherent structure and the associated mass transfer in wind-driven water-waves over canopy vegetation

Research Project

Project/Area Number 20360218
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Hydraulic engineering
Research InstitutionKyoto University

Principal Investigator

NEZU Iehisa  Kyoto University, 大学院・工学研究科, 教授 (30109029)

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)
Project Period (FY) 2008 – 2010
Project Status Completed (Fiscal Year 2010)
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)
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
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.

Report

(4 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • 2008 Annual Research Report
  • Research Products

    (39 results)

All 2011 2010 2009 2008 Other

All Journal Article (23 results) (of which Peer Reviewed: 23 results) Presentation (11 results) Book (2 results) Remarks (3 results)

  • [Journal Article] Turbulent structure and coherent vortices in open-channel flows with wind-induced water waves2011

    • Author(s)
      Sanjou M., Nezu, I.
    • Journal Title

      Environmental Fluid Mechanics Vol.11, No.2

      Pages: 113-131

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Turbulent structure and coherent vortices in open-channel flows with wind-induced water waves2011

    • Author(s)
      Sanjou, M., Nezu, I.
    • Journal Title

      Environmental Fluid Mechanics

      Volume: 11 Pages: 113-131

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Large Eddy Simulation of 3-D Flow Structure and Mass Transport in Open-Channel Flows with Submerged Vegetations2010

    • Author(s)
      Okamoto T., Nezu, I.
    • Journal Title

      J.of Hydro-environment Res. No.118

      Pages: 1-13

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Simultaneous measurements of velocity and plant motion in open-channel flows with flexible vegetations2010

    • Author(s)
      Nezu. I, Okamoto T.
    • Journal Title

      Environmental Hydraulics, CRC Press

      Pages: 209-220

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Energy transfer properties among mean, wave and turbulence components in open-channel flows with wind-induced water waves2010

    • Author(s)
      Sanjou M., Nezu, I
    • Journal Title

      Environmental Hydraulics, CRC Press

      Pages: 717-722

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] ラングミュアー循環流の3次元構造に関する基礎的研究2010

    • Author(s)
      秋谷優・山上路生・禰津家久
    • Journal Title

      土木学会論文集B Vo.66, No.4

      Pages: 371-383

    • NAID

      130004468119

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] The effect of coherent waving motion on turbulence structure in flexible Vegetated open channel flows2010

    • Author(s)
      Nezu, I., Okamoto, T.
    • Journal Title

      RiverFlow2010, Braunschweig

      Volume: 1 Pages: 429-436

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ラングミュアー循環流の3次元構造に関する基礎的研究2010

    • Author(s)
      秋谷優・山上路生・禰津家久
    • Journal Title

      土木学会論文集

      Volume: 66 Pages: 371-383

    • NAID

      130004468119

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Turbulence structure and "Monami" phenomena in flexible vegetated open-channel flows2009

    • Author(s)
      Okamoto T., Nezu, I.
    • Journal Title

      J.of Hydraulic Res. Vol.47

      Pages: 798-810

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] 柔軟性を有する植生開水路流れの組織乱流構造と藻波現象に関する実験的研究2009

    • Author(s)
      岡本隆明・禰津家久・山上路生
    • Journal Title

      土木学会論文集B Vo.65

      Pages: 190-202

    • NAID

      130004942987

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] 風波・開水路混成流における組織乱流渦とエネルギー輸送動態の解明2009

    • Author(s)
      山上路生・禰津家久
    • Journal Title

      土木学会論文集B Vo.65, No.3

      Pages: 203-216

    • NAID

      130004942988

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Turbulence structure and "Monami" phenomena in flexible vegetated open-channel flows2009

    • Author(s)
      Okamoto, T., Nezu, I.
    • Journal Title

      Journal of Hydraulic Research 47

      Pages: 798-810

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Turbulence structure and coherent motion in meandering compound open-channel flows2009

    • Author(s)
      Sanjou, M., Nezu, I.
    • Journal Title

      Journal of Hydraulic Research 47

      Pages: 598-610

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Particle-turbulence interaction and local particle concentration in sediment-laden open-channel flows2009

    • Author(s)
      Noguchi, K., Nezu, I.
    • Journal Title

      Journal of Hydro-Environment Research 3

      Pages: 54-68

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Turbulence structure and coherent motion in vegetated canopy open-channel flows2008

    • Author(s)
      Nezu, I., Sanjou M.
    • Journal Title

      Journal of Hydro-Environment Research, Elsevier Vol.2

      Pages: 62-90

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Turbulence structure and coherent motion-in vegetated canopy open-channel flows2008

    • Author(s)
      Nezu, I., Sanjou, M.
    • Journal Title

      Journal of Hydro-Environment Research 2

      Pages: 62-90

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Submerged Effects on Turbulence Structure in Vegetated Canopy Open-channel Flows2008

    • Author(s)
      Nezu, I., Sanjou, M., Okamoto T.
    • Journal Title

      Riverflow2008 1

      Pages: 203-210

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Experimental Study on Turbulent Diffusion in Submerged Vegetated Canopy Open-channel Flows2008

    • Author(s)
      Sanjou, M., Nezu, I., Okamoto, T.
    • Journal Title

      Riverflow2008 1

      Pages: 237-244

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] PIV Measurements in Meandering Compound Open-channel Flows2008

    • Author(s)
      Sanjou, M., Nezu, I.
    • Journal Title

      Riverflow2008 1

      Pages: 573-581

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Particle-fluid interaction and turbulence modulation over sand dunes2008

    • Author(s)
      Noguchi K., Nezu, I.
    • Journal Title

      Riverflow2008 1

      Pages: 801-808

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of particle size and concentration on turbulent structure in sediment-laden open-channel flow2008

    • Author(s)
      Noguchi, K., Nezu, I., Sanjou, M.
    • Journal Title

      Riverflow2008 1

      Pages: 91-98

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Turbulence Structure in Density Mixing Layer with Heat and Momentum Transfer2008

    • Author(s)
      Sarijou, M., Nezu, I.
    • Journal Title

      Riverflow2008 1

      Pages: 161-169

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Turbulence structure and fluid-particle interaction in sediment-laden flows over developing sand dunes2008

    • Author(s)
      Noguchi, K., Nezu, I., Sanjou, M.
    • Journal Title

      Journal of Environmental Fluid Mechanics 8

      Pages: 569-578

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Presentation] PIV studies on turbulence structure in ari/water interface with wind-induced water waves2010

    • Author(s)
      山上路生
    • Organizer
      第9回Hydrodynamics会議
    • Place of Presentation
      上海
    • Year and Date
      2010-10-12
    • Related Report
      2010 Final Research Report
  • [Presentation] Mass transport properties in closed basin with wind-induced water waves2010

    • Author(s)
      Nezu, I., Sanjou, M.
    • Organizer
      8^<th> International Symposium on Eco-Hydraulics
    • Place of Presentation
      韓国・ソウル
    • Year and Date
      2010-09-13
    • Related Report
      2010 Annual Research Report
  • [Presentation] Mass transport properties in closed basin with wind-induced water waves2010

    • Author(s)
      山上路生
    • Organizer
      第8回エコ水理学シンポジュウム
    • Place of Presentation
      ソウル
    • Year and Date
      2010-09-10
    • Related Report
      2010 Final Research Report
  • [Presentation] Flow resistance law in open-channel flows with rigid and flexible vegetation2010

    • Author(s)
      禰津家久
    • Organizer
      Riverflow2010会議
    • Place of Presentation
      Braunschweig, Germany.
    • Year and Date
      2010-09-07
    • Related Report
      2010 Final Research Report
  • [Presentation] Coherent turbulence structure generated by wind-induced water waves2010

    • Author(s)
      山上路生
    • Organizer
      Riverflow2010会議
    • Place of Presentation
      Braunschweig, Germany.
    • Year and Date
      2010-09-07
    • Related Report
      2010 Final Research Report
  • [Presentation] Effects of Vegetation Density on Coherent Structure in Flexible Vegetated Open-Channel Flow2009

    • Author(s)
      Nezu, I., Okamoto, T.
    • Organizer
      国際水理学会 (IAHR) 世界大会 Proc. of 33-rd IAHR Congress, Vancouver, No. 10496
    • Place of Presentation
      バンクーバー国際会議場, カナダ(CD-ROM)
    • Year and Date
      2009-08-12
    • Related Report
      2009 Annual Research Report
  • [Presentation] 風による自由水面シアーが開水路流れの組織乱流渦構造に与える影響2009

    • Author(s)
      山上路生, 禰津家久
    • Organizer
      水工学論文集, 土木学会
    • Place of Presentation
      芝浦工業大学
    • Year and Date
      2009-03-04
    • Related Report
      2008 Annual Research Report
  • [Presentation] 浮遊砂流れのバースト現象における粒子運動メカニズム関する研究2009

    • Author(s)
      野口和則, 禰津家久
    • Organizer
      水工学論文集, 土木学会
    • Place of Presentation
      芝浦工業大学
    • Year and Date
      2009-03-04
    • Related Report
      2008 Annual Research Report
  • [Presentation] 閉鎖性風波界面下における乱れエネルギー輸送と移流拡散特性に関する研究2009

    • Author(s)
      山上路生, 禰津家久, 秋谷優
    • Organizer
      水工学論文集, 土木学会
    • Place of Presentation
      芝浦工業大学
    • Year and Date
      2009-03-04
    • Related Report
      2008 Annual Research Report
  • [Presentation] Effects of wind-induced waves on turbulence structure inshallow open-channel flows2008

    • Author(s)
      Sanjou, M., Nezu, I.
    • Organizer
      Proc. of 2nd International Symposium on Shallow Flows, 国際水理学会
    • Place of Presentation
      ホンコン科学技術大学
    • Year and Date
      2008-12-10
    • Related Report
      2008 Annual Research Report
  • [Presentation] PIV Measurements of turbulence structure and Monami phenomena in open-channel flows with fiexible vegetations2008

    • Author(s)
      Okamoto, T., Nezu, I. Sanjou, M.
    • Organizer
      Proc. of 8th International Conference on Hydroscience and Engineering, 国際水理学会
    • Place of Presentation
      名古屋大学
    • Year and Date
      2008-09-09
    • Related Report
      2008 Annual Research Report
  • [Book] Flow and Sediment Transport in Compound Channels,(Eds. S.Ikeda and I.K.McEwan)2009

    • Author(s)
      Nezu, I., 他
    • Total Pages
      333
    • Publisher
      IAHR Monograph
    • Related Report
      2010 Final Research Report
  • [Book] Flow and Sediment Transport in Compound Channels2009

    • Author(s)
      Nezu, I.(分担執筆)
    • Total Pages
      333
    • Publisher
      国際水理学会 (IAHR)
    • Related Report
      2009 Annual Research Report
  • [Remarks] ホームページ等

    • URL

      http://www.ce.t.kyoto-u.ac.jp/ja

    • Related Report
      2010 Final Research Report
  • [Remarks] 本研究成果も含めて, 研究代表者・禰津のこれまでの研究成果に対して, 2009年, 国際水理学会の大賞である Yalin 賞が授与された. 世界で二人目である. 京都大学のホームページに掲載されている

    • URL

      http://www.kyoto-u.ac.jp/ja/news_data/h/h1/news7/2009/090831_1.htm

    • Related Report
      2009 Annual Research Report
  • [Remarks]

    • URL

      http://www.ce.t.kvoto-u.ac.jp/ia

    • Related Report
      2008 Annual Research Report

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Published: 2008-04-01   Modified: 2016-04-21  

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