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Snow Drain System with Open Channels and Pipes.

Research Project

Project/Area Number 62550382
Research Category

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

Allocation TypeSingle-year Grants
Research Field Hydraulic engineering
Research InstitutionHachinohe Institute of Technology

Principal Investigator

SASAKI Mikio  Hachinohe Institute of Technology (Associate Professor), 工学部, 助教授 (30118195)

Co-Investigator(Kenkyū-buntansha) TAKAHASHI Hiroshi  Tohoku University (Research Associate), 工学部, 助手 (90188045)
KAWASHIMA Toshio  Hachinohe Institute of Technology (Professor), 工学部, 教授 (10005192)
Project Period (FY) 1987 – 1988
Project Status Completed (Fiscal Year 1988)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1988: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1987: ¥1,600,000 (Direct Cost: ¥1,600,000)
KeywordsSnow Drain System / Snow-water Mixture / Headloss / Dilatant Fluid / Bingham Fluid pressure Loss Coefficient / 圧力損失係数 / ビンガム流動 / ダイレタント流動 / 雪水二相流 / 圧力損失 / スラリ輸送 / 雪混じり流れ / 混相流
Research Abstract

This is the fundamental study on hydraulic transport of snow block from an urban area to the river through open channel and pipeline system. In present study, Several investigations on the flow behavior of snow-water mixtures in open channels and pipes were made experimentally and theoretically. The experiment was carried out by using a transparent acrylic pipes of 5 cm, in which the snow block and two kinds of polystyrene particles of diameter d=3.21mm and 3.09mm with densities near that of the snow block were used to investigate headloss and particle velocity. And then theoretical analysis on the flow of snow-water mixtures was made by using the plug flow model and the dilatant fluid concept.
The results are as follows; 1) The negative values are obtained in the experiments of the perssure loss in the range of higher velocities. 2) In the range of lower velocities, a layer of higher solid concentration is generated in upper region in pipes like moving bed. Velocities of solid particles in that region become lower due to the higher solid concentrations. 3) The theory of the flow of the snow-water mixtures has been extended. The mathematical model of snow-water mixtures in the range of the lower velocities is expressed by the turbulent flow, the plug flow and the dilatant flow models in the lower, middle and upper regions in pipes, respectively. And then the theoretical model of snow-water mixtures in the range of the higher velocities is expressed by the turbulent flow and the plug flow models. The velocity distributions given by present models are in good agreement with the experimental ones.

Report

(3 results)
  • 1988 Annual Research Report   Final Research Report Summary
  • 1987 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] 川島俊夫: 日本雪工学会誌. 8. 3-11 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 川島俊夫: スラリー輸送研究会昭和63年度総会講演資料. 1-8 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 飯坂聡宏: 昭和62年度土木学会東北支部技術研究発表会講演概要. 108-108 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 川島俊夫: 昭和62年度土木学会東北支部技術研究発表会講演概要. 109-110 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 佐々木幹夫: 土木学会第43回年次学術講演会. II. 362-363 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 高橋弘: 昭和63年度土木学会東北支部技術研究発表会講演概要. 188-189 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 田沢隆: 昭和63年度土木学会東北支部技術研究発表会講演概要. 190-191 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 菅原俊成: 昭和63年度土木会東北支部技術研究発表会講演概要. 192-193 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] T. Kawashima; H. Takahashi; M. Sasaki: "Analysis on Flow Behavior of Snow-Water Two-Phase Flow in Pipes." Journal of Snow Engineering (The Japan Society for Snow Engineering). 8. 3-11 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 川島俊夫: 日本雪工学会誌. 8. 3-11 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 川島俊夫: スラリー輸送研究会昭和63年度総会講演資料. 1-8 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 佐々木幹夫: 土木学会第43回年次学術講演会. II. 362-363 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 高橋弘: 昭和63年度土木学会東北支部技術研究発表会. 189-189 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 菅原俊哉: 昭和63年度土木学会東北支部技術研究発表会. 192-193 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 田沢隆: 昭和63年度土木学会東北支部技術研究発表会. 190-191 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 田沢隆: 昭和63年度土木学会東北支部技術研究発表会講演概要. 190-191 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 菅原俊哉: 昭和63年度土木学会東北支部技術研究発表会講演概要. 192-193 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 川島俊夫, 高橋弘, 佐々木幹夫: 土木学会東北支部技術研究発表会講演概要. 1. 109-110 (1988)

    • Related Report
      1987 Annual Research Report

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Published: 1987-04-01   Modified: 2016-04-21  

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