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Hydraulic characteristic on flow field and sediment movement inside and outside seagrass fields

Research Project

Project/Area Number 14550520
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 水工水理学
Research InstitutionKobe City College of Technology

Principal Investigator

TSUJIMOTO Gozo  Kobe Ctiy College of Technology, Prof., 教授 (10155377)

Co-Investigator(Kenkyū-buntansha) NAKAO Kohichi  Kobe Ctiy College of Technology, Prof., 教授 (80124064)
KAKINOKI Tetsuya  Kobe Ctiy College of Technology, Lecture, 講師 (50353298)
SHIGEMATSU Takaaki  Osaka City Univeristy, Associate Prof., 助教授 (80206086)
TAKEHARA Kohsei  Kikin University, Associate Prof., 助教授 (50216933)
HOSOYAMADA Tokuzo  Nagaoka University of Tech., Associate Prof., 助教授 (70262475)
Project Period (FY) 2002 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 2003: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2002: ¥1,900,000 (Direct Cost: ¥1,900,000)
KeywordsSeaweed / imaging technique / porsou model / moving boundary / field observation / 藻場 / PTV画像計測 / 浮遊砂濃度 / 現地観測 / 水質 / 数値計算 / 海草 / PTV / 乱流モデル
Research Abstract

To obtain some information to reproduce the disappearing seagrass field in the sea area, the laboratory experiment and the field observation have been conducted. The suspended sediment concentration among model seagrasses has been measured by using image technique. The distribution of suspended sediment and the grain size could be measured simultaneously. It turned out that the particle size was bigger than medium grain size at the beginning of its movement, the particle of a central particle size moved with the increasing of time. To consider the effect of the movement object into the numerical simulation, the wrapping judgment method was used. A measuring method of fluid motion inside and in the vicinity of porous media of silicon spheres is presented. Sodium iodide solution is used as the refraction index matching fluid. In order to capture pictures, a resolution PIV method Some experimental results on the velocity field and turbulence kinemaatic energy are presented. Structure of the flow field inside and in the vicinity of the porous media is discussed. Moreover generation and dissipation mechanism of the turbulence was discussed.
A field observation has been executed over the seagrass field formed at Eigashima beach in Akeshi City. There were a lot of died seagrass because the growing thickly period had been passed at time. There are clear correlations in PH and DO, and it is thought the influence of the photosynthesis in daytime. Moreover, the decrease at flow velocity was observed by the influence of the marine forest in the bottom of the sea neighborhood

Report

(3 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • Research Products

    (24 results)

All 2005 2004 2003 Other

All Journal Article (11 results) Publications (13 results)

  • [Journal Article] Hydraulic characteristic under model seagrass by flow visulaization using the PTV technique2005

    • Author(s)
      Tsujimoto ら
    • Journal Title

      Journal of Coastal Research, Special Issue (in printed)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Seasonal changes of the profile of internal flats2005

    • Author(s)
      Kakinoki ら
    • Journal Title

      Journal of Coastal Research, Special Issue (in printed)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Hydraulic characteristic under model seagrass by flow visualization using the PTV technique2005

    • Author(s)
      Gozo Tsujimoto et al.
    • Journal Title

      Journal of Coastal Research Special Issue(in printed)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Seasonal changes of the profile of internal flats2005

    • Author(s)
      Tetsuya Kakinoki et al.
    • Journal Title

      Journal of Coastal Research Special Issue(in printed)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] ビデオ画像による水中の砂粒子濃度の測定2004

    • Author(s)
      中尾幸一
    • Journal Title

      神戸高専研究紀要 42

      Pages: 103-106

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] 浮遊砂濃度の粒度及び濃度分布の同時計測に関する基礎的研究2004

    • Author(s)
      柿木哲哉, 辻本剛三
    • Journal Title

      海岸工学論文集 51

      Pages: 1446-1450

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] 江井ヶ島海岸の藻場における水質に関する現地調査2004

    • Author(s)
      山田浩之, 辻本剛三
    • Journal Title

      土木学会関西支部年次学術講演会 平成16年度

      Pages: 91-93

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Measurement of concentration of suspended sediment in the water body With video images2004

    • Author(s)
      Kohichi Nakao
    • Journal Title

      Research Report of Kobe City College of Technology No.42

      Pages: 103-106

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Simultaneous measurement of grain size and concentration for suspended Sediment (in Japanese)2004

    • Author(s)
      Tetsuya Kakinoki, Gozo Tujimoto
    • Journal Title

      Journal of Coastal Engineering Vol.51

      Pages: 1446-1450

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] 多孔質体による乱れの生成・減衰機構の解明に関する実験的研究2003

    • Author(s)
      重松孝昌ら
    • Journal Title

      水工学論文集 47

      Pages: 465-469

    • NAID

      130003841955

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Experimental study on generation and dissipation mechanisms of Turbulence inside and in the vicinity of porous media (in Japanese)2003

    • Author(s)
      Takaaki Shigematsu et al.
    • Journal Title

      Journal of Hydraulics Vol.46

      Pages: 465-469

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 辻本剛三, 山田浩之, 柿木哲哉, 日下重幸: "画像計測による海草周辺の水理特性に関する実験的研究"海岸工学論文集. 50. 1091-1095 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Gozo Tsujimoto, Hiroyuki Yamada: "Hydraulic characteristics under model seagrasses by flow visualization using the PTV technique"Journal of Coastal Research Special Isuue. 36(In printed). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] 大塚直, 竹原幸生, 水谷夏樹, 辻本剛三, 江藤剛治, 高野保英: "風波によるマイクロブレーキング現象の画像計測"海岸工学論文集. 50. 86-90 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 中尾幸一: "ビデオ画像による水中の砂粒子濃度の測定"神戸市立工業高等専門学校研究紀要. 42. 103-106 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 柿木哲哉, 辻本剛三, 山田浩之, 衣本准: "粒子画像抽出による浮遊砂濃度推定に関する研究"土木学会第58回年次学術講演会講演概要集. 2. 221-222 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 細山田得三: "新潟西海岸を対象とした多方向不規則波の伝播と漂砂の数値実験"河口研究. 9. 12-1-12-4 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 柿木哲哉, 辻本剛三: "粒子画像抽出による浮遊砂濃度推定に関する研究"土木学会年次学術講演会. 58. (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 柿木哲哉, 辻本剛三: "画像解析を用いた浮遊砂濃度計測に関する基礎的研究"土木学会関西支部年次学術講演会. 15年度. (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 山田浩之, 辻本剛三: "流れの中で運動形態が異なる物体周辺の流動に関する研究"土木学会関西支部年次学術講演会. 15年度. (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 山田浩之, 辻本剛三: "画像計測による模擬海草周辺の流れ構造の解明"土木学会年次学術講演会. 58. (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 辻本剛三, 山田浩之: "画像計測による海草周辺の水理特性に関する実験的研究"海岸工学論文集. 50. (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 竹原幸生, 藤田一郎: "ヘリコプターを用いた実河川表面流の画像計測の試み"水工学論文集. 46. 809-814 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 平山秀夫, 辻本剛三: "海岸工学"コロナ社. 188 (2003)

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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