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Study on Density Stratified Flow due to Thermal Disturbances at Step Region in Shallow Standing Water Areas

Research Project

Project/Area Number 09660262
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Irrigation, drainage and rural engineering/Rural planning
Research InstitutionKyushu University

Principal Investigator

MORI Ken  Kyushu University, Faculty of Agriculture, Associate Professor, 農学部, 助教授 (50117272)

Co-Investigator(Kenkyū-buntansha) HIRAMATSU Kazuaki  Kyushu University, Faculty of Agriculture, Asistant Professor, 農学部, 助手 (10199094)
SHIKASHO Shiomi  Kyushu University, Faculty of Agriculture, Professor, 農学部, 教授 (80038265)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1998: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1997: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsStanding water area / Density Current / Enviroinment of Water Area / Thermal Mixed Layer / Stratified FLow / Thermal Convective FLow / 渦動拡散係数 / 混合層
Research Abstract

Flow and water temperature spatial structures caused by disturbances added to the water surface , which were concerned with water quality and pollution control in shallow standing water areas, were studied. Disturbances are thermal , which are the daily cycle of solar heating and cooling on the water surface.
It was investigated that Strong thermal stability of the surface zone during heating on the surface prevented the vertical mass transfer between upper and lower layer through the density interface from field observation, On the other hand, it was founded that the thermal mixed layer developping during cooling from the surface increased the scale of thermal convective cells and produced the vertical mixing at the density interface.
It was suggested that an Artificial Intelligence model ( a feedback artificial neural network model) was an effective techinique for the short-term water-stage prediction in a tidal river.
It was showned that two dimensional vertical thermal convective model , which was based on field and experimental data, could be simulated forming and developping processes of thermal convective cells due to cooling on the water surface both with and witout thermal stratification.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] Hiramatsu K.: "The Use of Genetic Alogorithm and Artificial Neural network for the Short-Term Prediction of water-Stages in a Tidal River" Proceedings of the 11th Congress of Asia and Pacific Division of the International Association for Hydraulic Research. 587-595 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Harada M.: "Measuring Method of Suspension Concentration in Open Channel Flow using Image Processing" Proceedings of the 11th Congress of Asia and Pacific Division of the International Association for Hydraulic Research. 607-616 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 平松和昭: "フィードバック型ニューラルネットワークによる低平地排水河川の水位予測" 応用水文. 11. 37-45 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Kazuaki HIRAMATSU: "The Use of Genetic Algorithm and Artificial Neural network for the Shor Term Prediction of Water-Stages in a Tidal River" Proceedings of the 11th Congress of Asia and Pacific Division of the International Association for Hydraulic Research. 587-595 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Masayoshi HARADA: "Measuring method of Suspension Concentration in Open Channel Flow using Image-Processing" Proceedings of the 11th Congress of Asia and Pacific Division of the International Association for Hydraulic Research. 607-616 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Kazuaki HIRAMATSU: "Prediction of water-stages in a Tidal River using Feedback Artificial Neural Network" Applied Hydrology. 11. 37-45 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Hiramatsu K.: "The Use of Genetic Algorithm and Artificial Neural network for the Short-Term Prediction of water-Stages in a Tidal River" Proceedings of the 11th Congress of Asia and Pacific Division of the International Association for Hydraulic Research. 587-595 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Harada M.: "Measuring Method of Suspension Concentration in Open Channel Flow using Image Processing" Proceedings of the 11th Congress of Asia and Pacific Division of the International Association for Hydraulic Research. 607-616 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 平松和昭: "フィードバック型ニューラルネットワークによる低平地排水河川の水位予測" 応用水文. 11. 37-45 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Eisaku Shiratani: "Modeling of Nitrogen Discharge from a Bavley field" Rural and Environmental Engineering. 33. 37-53 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 森 健: "浅い閉鎖性水域の流動と水質" 平成9年度農業土木学会九州支部シンポジウム論文集. 63-82 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 平松 和昭: "人工知能(AI)による河川感潮域の水環境の予測" 平成9年度農業土木学会九州支部シンポジウム論文集. 1-22 (1997)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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