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Improvement and application of numerical models for non-Darcy flow based on Lagrangian method -for the purpose of on-site application-

Research Project

Project/Area Number 17K15346
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Rural environmental engineering/Planning
Research InstitutionEhime University

Principal Investigator

Izumi Tomoki  愛媛大学, 農学研究科, 准教授 (40574372)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords非ダルシー流 / 地下水浸透流解析 / 粒子法 / 非ダルシー流れ / 水理 / 浸透流
Outline of Final Research Achievements

In this study, a numerical model for the non-Darcy flow which is developed in the preceding research project is improved to obtain the versatility of the model and its applicability to two in-situ problems that are the rainfall infiltration flow on mountain slopes during heavy rainfall and the infiltration/drainage flow around the underdrain constructed under the multipurpose paddy fields is validated in order to address in-situ problems where the seepage flow analysis that does not follow the Darcy’s law is indispensable. A governing equation based on the nonlinear resistance law extending the Darcy’s law widely used in the previous models for seepage flow is employed in this model. The validation is conducted through experiments with soil layers in a laboratory scale.

Academic Significance and Societal Importance of the Research Achievements

従来の浸透流解析モデルはダルシー則に基づく支配方程式によるものであり,その解析対象はダルシー流が前提である.本研究で改良を加え現場適用を検討した浸透流解析モデルは,ダルシー則を拡張した非線形抵抗則に基づく支配方程式によるものであり,ダルシー流および非ダルシー流を解析できるモデルである.また,近年,豪雨による土砂災害が毎年のように各地で発生していることを背景に,具体的な現場の問題として,豪雨時の山地斜面への降雨浸透流解析への適用可能性の検証に取り組んだ.

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (8 results)

All 2019 2018 2017

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results) Presentation (7 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Numerical model for non-Darcy flow through coarse porous media using the moving particle simulation method2018

    • Author(s)
      Izumi, T. and Mizuta, J.
    • Journal Title

      Thermal Science

      Volume: 印刷中

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Izbash則に基づく非ダルシー流の数値解析モデル2019

    • Author(s)
      泉 智揮・山下尚之
    • Organizer
      創立90周年記念2019年度(第68回)農業農村工学会大会講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 急傾斜園地における土壌水分の現地観測と数値解析2019

    • Author(s)
      泉 智揮・尾崎浩平・小林範之
    • Organizer
      第74回農業農村工学会中国四国支部講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Seepage experiment and numerical analysis for non-Darcy flow through coarse porous media2018

    • Author(s)
      泉 智揮
    • Organizer
      数理農学における時系列データのモデル化と解析
    • Related Report
      2018 Research-status Report
  • [Presentation] 非ダルシー流解析モデルにおける係数モデルの比較と混合試料への適用2018

    • Author(s)
      泉 智揮・黒田翔汰・山下尚之
    • Organizer
      平成30年度農業農村工学会大会講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] Numerical model for non-Darcy flow through coarse porous media using MPS method2017

    • Author(s)
      Izumi, T.
    • Organizer
      12th Sustainable Development of Energy, Water and Environment Systems Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Forchheimer則に基づく非ダルシー流の数値解析モデル2017

    • Author(s)
      泉 智揮・水田純也
    • Organizer
      平成29年度農業農村工学会大会講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] MPS法を用いたForchheimer則に基づく非Darcy流の数値解析モデルとその検証2017

    • Author(s)
      泉 智揮・水田純也
    • Organizer
      第72回農業農村工学会中国四国支部講演会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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