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Open-Channel Flow Control by Vegetation and Artificial Roughness and Hydraulic Design of Multi-Function Channels

Research Project

Project/Area Number 06650558
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 水工水理学
Research InstitutionKanazawa University

Principal Investigator

TSUJIMOTO Tetsuro  Kanazawa Univ., Dep. of Civil Engrg., Assoc. Prof., 工学部, 助教授 (20115885)

Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1995: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1994: ¥1,000,000 (Direct Cost: ¥1,000,000)
KeywordsFlow with vegetation / Artificial roughness / Open-channel flow / Hydraulic design / Strip roughness / Secondary flow / Cellular motion / Lateral diffusion / 開水路乱流 / 多機能水路 / 数値解析
Research Abstract

Recently, river improvement should be planned to refine various functional aspects of rivers such as flood control, more efficient water resources utilization, recreational or leisure usage of rivers, well-conserved ecological situation, aquatic habitat and so on. And to achieve such multi-functions, the flow and river morphology should be more skillfully managed or controlled based on hydraulics and mechanics of sediment transport.
In this study, control of cellular motion by oblique arrangements of strip roughness and promotion of lateral diffusion by arrangement of vegetation zone have been focused. Cellular motion helps straight navigation of boat and canoe, or removed snow lumps by secondary flow motion, or it gathers floating garbage to remove them by side overflow. Furthermore, it even changes the primary velocity profile. Stream-type fish way is an example of the latter. While, the promoted lateral diffusion works to decrease the turbidity of the main channel by trapping it to the vegetation zone.
In this study, various types of approaches have been employed : laboratory experiments, field measurements and numerical analysis as well as simplified hydraulic understanding of the phenomena. The mechanism of formation of cellular motion by obliquely arranged strip roughness on bed and/or side walls and promotion of lateral diffusion by vegetation zone have been understood at several levels. The experiment has provided empirical relations and they have been supported by numerical analysis. And, they must be useful for hydraulic design of multi-functional streams.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (27 results)

All Other

All Publications (27 results)

  • [Publications] 辻本哲郎: "Cellular-motion control by skewed arrangements of strip roughness in open channel" Proc.2nd International Conference on Hydro-Science & -Engineering,Beijing, China. 1839-1846 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 清水義彦: "植生帯を伴う流れ場の平面2次元解析" 水工学論文集. 39. 513-518 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 辻本哲郎: "斜め桟粗度による螺旋流制御" 水工学論文集. 39. 571-576 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 岡田敏治: "側岸に植生帯を有する流れの遷移特性について" 第2回河道の水理と河川環境シンポジウム論文集. 203-210 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 辻本哲郎: "Numerical analysis for aid to understand the flow structure of stream-type fishways" Proc.International Symposium on Fishways '95,Gifu. 49-56 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 辻本哲郎: "Transverse trap of suspended sediment by vegetation zone along a stream" Proc.International Conference on Ecological System Enhancement Technique for Aguatic Environments,Tokyo. 150-155 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 辻本哲郎: "扇状地河川の河原の植物群落と河道特性 -手取川を例として-" 建設省中部地方建設局, 45 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 吉川秀夫: "河川の植生と河道特性" 河川環境管理財団, 127 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tsujimoto, T.: "Flow and suspended sediment in a compound channel with vegetation" Proc. 1st. Int. Sym. Habitat Hydraul. Trontheim, Norwey. 357-370 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tsujimoto, T.: "Cellular-motion control by skewed arrangements of strip roughness in open channel" Proc. 2nd Int. Conf. on Hydro-Science &-Engrg., Beijing, China. 1839-1846 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tsujimoto, T.: "Numerical analysis for aid to understand the flow structure of stream-type fishways" Proc. Int. Sym. Fishways, '95, Gifu. 49-56 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tsujimoto, T.: "Numerical calculation of flow in vertical slot and its application" Proc. Int. Sym. Fishways, '95, Gifu. 57-64 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tsujimoto, T.: "Transverse trap of suspended sediment by vegetation zone along a stream" Proc. Int. Conf. Ecological System Enhancement for Aquatic Environ., Tokyo. 150-155 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tsujimoto, T.: "Cellular motion control by oblique arrangements of strip roughness on bottom/and side wall of channels to enhance eiviron-mental functions of rivers" Proc. Int. Conf. Ecological System Enhancement for Aquatic Environ., Tokyo. 239-244 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 岡田敏治: "側岸に植生帯を有する流れの遷移特性について" 第2回河漬の水理と河川環境シンポジウム論文集. 203-210 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 辻本哲郎: "Numerical analysis for aid to understand the flow structure of stream-type fishways" Proc. Int. Sym. on Fisways '95, Gifu. 49-56 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 辻本哲郎: "Numerical calculation of flow in vertical slot and its application" Proc. Int. Sym. on Fisways '95, Gifu. 57-64 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 辻本哲郎: "Transverse trap of suspended sediment by vegetation zone along a stream" Proc. Int. Conf. on Ecological System Enhancement Technique for Aquatic Environments, Tokyo. 150-155 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 辻本哲郎: "Cellular-motion control by oblique arrangment of strip roughness on bottom orland side wall of channel to enhance environmantal function of rivers" Proc. Int. Conf. on Ecological System Enhancement Technique for Aquatic Environments, Tokyo. 239-244 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 辻本哲郎: "ストリーム型魚道の流れの構造について" 水工学論文集. 40(印刷中). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 吉川秀夫: "河川の植生と河道特性" 河川環境管理財団, 127 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 辻本哲郎・北村忠紀: "側岸部に植生群落を有する開水路流れの横断混合機構に関する実験的研究" 土木学会論文集. 491 II-27. 61-70 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 辻本哲郎・清水義彦: "底面粗度の変化に対する開水路流れの構造の応答特性" 土木学会論文集. 497 II-28. 61-70 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 辻本哲郎・北村忠紀・中川博次: "側岸部植生群落周辺の掃流過程と分級" 土木学会論文集. 527 II-33. 99-108 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 辻本哲郎・赤城里至: "不規則継続跳躍モデルとK-ε乱流モデルを用いた飛砂の運動と風の解析" 海岸工学論文集. 41. 386-390 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 辻本哲郎・清水義彦・松尾和弘: "斜め桟粗度により螺旋流制御" 水工学論文集. 39(印刷中). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 辻本哲郎: "Cellular‐Motion Control by Skewed Arrangements of Strip Roughness in Open Channel" Advances in Hydro‐Science and Engineering. II(印刷中). (1995)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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