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New frontiers in discontinuum mechanics model: coarse-grained DEM for powder systems

Research Project

Project/Area Number 21K19760
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 60:Information science, computer engineering, and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Sakai Mikio  東京大学, 大学院工学系研究科(工学部), 教授 (00391342)

Project Period (FY) 2021-07-09 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2023: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2022: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords粗視化 / DEM / 離散要素法 / 固気液三相流 / 気液二相流 / 転がり抵抗 / 非弾性衝突 / Discrete Element Method / Coarse-grained DEM / 固体-流体連成問題 / スケーリング則モデル / Parcel / デジタルツイン / Refined Grid Model / 粉体 / スケーリング則 / 数値流体力学 / 不連続体 / データサイエンス / 粒子法 / 粉体工学 / 符号付距離関数
Outline of Research at the Start

不連続体である粉体の数値シミュレーションには、ラグランジュ的手法のDEMが広く使われている。DEMでは、最新の計算機を使用してもスプーン数杯分の粉砂糖に含まれる粒子数しか計算を実行することができなかった。この問題を解決するために、研究代表者によってスケーリング則モデルのDEM粗視化モデルが開発された。本研究では、粉体シミュレーションの応用範囲を広げるために、粒子の表面状態および非球形粒子を対象としたDEM粗視化モデルを新たに開発する。本研究成果は、粉体シミュレーションの研究対象を大幅に拡大させられるため、既存の粉体が係わる学術体系・方向を大きく変革させることが期待できる。

Outline of Final Research Achievements

The current coarse-grained DEM has a limited range of applications and cannot be used for extremely complex systems such as gas-solid-liquid three-phase flows. Additionally, the existing coarse-grained DEMs do not account for rolling resistance or inelastic collisions. Therefore, this study aims to extend the application of the coarse-grained DEM to complex industrial systems. Furthermore, rolling resistance and inelastic collisions are incorporated into the coarse-grained DEM. Verification and Validation (V&V) are conducted in powder mixing and fluidized beds to ensure the reproducibility of macro phenomena in powders and the universality of the model.

Academic Significance and Societal Importance of the Research Achievements

本研究では、既存のDEM粗視化モデルの応用範囲を複雑な産業体系に広げた。気液界面を精緻に模擬するモデル化を施し、固相については粗視化を行い、大規模固気液三相流の数値シミュレーションを実現した。さらに、転がり抵抗および非弾性衝突に関するDEM粗視化モデルを開発した。本研究の成果は、単なる不連続体のモデリングにとどまらず、幅広い工学分野の製品開発において役立てられると考えられる。従って、本研究は、不連続体の力学という学問分野を大きく前進させるばかりでなく、粉体の挙動を科学的・工学的に理解する研究対象の範囲を大幅に拡大させることもできたと結論づけられる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (29 results)

All 2024 2023 2022 2021 Other

All Journal Article (9 results) (of which Peer Reviewed: 9 results,  Open Access: 3 results) Presentation (19 results) (of which Int'l Joint Research: 10 results,  Invited: 13 results) Remarks (1 results)

  • [Journal Article] Validation study on a coarse-grained DEM-CFD simulation in a bead mill2024

    • Author(s)
      Tsunazawa Yuki、Soma Nobukazu、Iijima Motoyuki、Tatami Junich、Mori Takamasa、Sakai Mikio
    • Journal Title

      Powder Technology

      Volume: 440 Pages: 119743-119743

    • DOI

      10.1016/j.powtec.2024.119743

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Large-Scale Discrete Element Modeling for a Gas?Solid?Liquid Flow System2023

    • Author(s)
      Li Rui、Duan Guangtao、Yamada Daisuke、Sakai Mikio
    • Journal Title

      Industrial & Engineering Chemistry Research

      Volume: 62 Issue: 42 Pages: 17008-17018

    • DOI

      10.1021/acs.iecr.3c01511

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] DEM simulations in nuclear engineering: a review of recent progress2023

    • Author(s)
      Li Rui、Duan Guangtao、Sakai Mikio
    • Journal Title

      Journal of Nuclear Science and Technology

      Volume: 61 Issue: 3 Pages: 285-306

    • DOI

      10.1080/00223131.2023.2231969

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On POD-based modal analysis in simulations of granular flows2023

    • Author(s)
      Li Shuo、Duan Guangtao、Sakai Mikio
    • Journal Title

      Powder Technology

      Volume: 413 Pages: 118058-118058

    • DOI

      10.1016/j.powtec.2022.118058

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Development of Fundamental Technologies on Computational Granular Dynamics towards Construction of a Digital Twin for Powder Compaction Process2022

    • Author(s)
      SAKAI Mikio
    • Journal Title

      Journal of the Japan Society of Powder and Powder Metallurgy

      Volume: 69 Issue: 12 Pages: 490-495

    • DOI

      10.2497/jjspm.69.490

    • ISSN
      0532-8799, 1880-9014
    • Year and Date
      2022-12-15
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Development of a reduced-order model for large-scale Eulerian?Lagrangian simulations2022

    • Author(s)
      Li Shuo、Duan Guangtao、Sakai Mikio
    • Journal Title

      Advanced Powder Technology

      Volume: 33 Issue: 8 Pages: 103632-103632

    • DOI

      10.1016/j.apt.2022.103632

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Recent progress on the discrete element method simulations for powder transport systems: A review2022

    • Author(s)
      Shi Qi、Sakai Mikio
    • Journal Title

      Advanced Powder Technology

      Volume: 33 Issue: 8 Pages: 103664-103664

    • DOI

      10.1016/j.apt.2022.103664

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] POD-based identification approach for powder mixing mechanism in Eulerian?Lagrangian simulations2022

    • Author(s)
      Li Shuo、Duan Guangtao、Sakai Mikio
    • Journal Title

      Advanced Powder Technology

      Volume: 33 Issue: 1 Pages: 103364-103364

    • DOI

      10.1016/j.apt.2021.11.016

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] セラミックス粉体成形加工プロセスのサイバーフィジカルシステム構築に向けた粉体シミュレーション技術2021

    • Author(s)
      森勇稀、酒井幹夫
    • Journal Title

      セラミックス

      Volume: 56 Pages: 694-699

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] What technologies are essential in development of the DEM-based digital twin?2023

    • Author(s)
      Mikio Sakai
    • Organizer
      9th International Conference on Discrete Element Methods
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On a simulation-based digital twin towards the realization of smart manufacturing in the powder industry2023

    • Author(s)
      Mikio Sakai
    • Organizer
      The Asian Pacific Confederation of Chemical Engineering (APCChE) 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 粉体プロセスのデジタルツイン構築のための革新的数値シミュレーションモデルの開発と産業応用2023

    • Author(s)
      酒井幹夫
    • Organizer
      日本セラミックス協会 第36回秋季シンポジウム
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] What is necessary for the realization of a simulation-based digital twin in a powder process?2023

    • Author(s)
      Mikio Sakai
    • Organizer
      4th International Powder Technology Conference and Exhibition Indonesia 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 不連続体を対象としたマルチフィジックスシミュレーションとその産業応用2023

    • Author(s)
      酒井幹夫
    • Organizer
      日本原子力学会 2023年春の年会 炉物理部会セッション
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Numerical Investigation on the Self-Leveling Behavior of a Core Debris Bed2023

    • Author(s)
      Rui Li, Mikio Sakai
    • Organizer
      日本原子力学会 2023年春の年会
    • Related Report
      2022 Research-status Report
  • [Presentation] Advanced discrete element method towards a digital twin based powder system2022

    • Author(s)
      Mikio SAKAI
    • Organizer
      15th World Congress on Computational Mechanics (WCCM-XV)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] State-of-the-art modeling towards realization of CPS based pharmaceutical manufacturing processes2022

    • Author(s)
      Mikio SAKAI
    • Organizer
      International Powder & Nanotechnology Forum 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] State-of-the-art modeling of computational granular dynamics for a simulation-based digital twin2022

    • Author(s)
      Mikio SAKAI
    • Organizer
      9th World Congress on Particle Technology
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 粉体プロセスにおけるシミュレーションベースデジタルツイン構築に向けた基礎研究2022

    • Author(s)
      酒井幹夫
    • Organizer
      国際粉体工業展東京 2022・最新情報フォーラム
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 粉体成形プロセスのシミュレーションベースデジタルツインに関する基礎研究2022

    • Author(s)
      酒井幹夫
    • Organizer
      日本セラミックス協会 エンジニアリングセラミックス部会 第53回エンジニアリングセラミックスセミナー
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] On computational granular dynamics based digital twin: core technologies in the DEM2022

    • Author(s)
      Mikio SAKAI
    • Organizer
      International Conference on the Characterization and Control of Interfaces for High Quality Advanced Materials 2022 (ICCCI2022)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Validation Study on a Coarse Grained DEM-CFD for a Three Phase Flow System2022

    • Author(s)
      Rui Li, Daisuke Yamada, Mikio Sakai
    • Organizer
      International Conference on the Characterization and Control of Interfaces for High Quality Advanced Materials 2022 (ICCCI2022)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Validation Study on FELMI for a Gas-Liquid-Solid Flow2022

    • Author(s)
      Rui Li, Daisuke Yamada, Mikio Sakai
    • Organizer
      日本原子力学会 2022年秋の大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Validation study on a coarse-grained DEM for the flow regime in a spouted bed based on the POD analysis2021

    • Author(s)
      李碩、段広涛、酒井幹夫
    • Organizer
      粉体工学会第56回夏期シンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] DEM-CFD simulation on effect of air flow on powder mixing in a container blender2021

    • Author(s)
      石琪、酒井幹夫
    • Organizer
      粉体工学会第56回夏期シンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] コンテナブレンダーの粉体混合における密度偏析の抑制効果2021

    • Author(s)
      柘野善治、酒井幹夫、江口潤
    • Organizer
      粉体工学会第56回夏期シンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] Innovative discrete element modeling for cyber-physical powder systems2021

    • Author(s)
      Mikio Sakai
    • Organizer
      International Workshop on Computational Mechanics of Granular Materials
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Advanced discrete element modeling for digital twin2021

    • Author(s)
      Mikio Sakai
    • Organizer
      The 3rd International Symposium on Computational Particle Technology
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Remarks] 東京大学 酒井研究室

    • URL

      https://dem.t.u-tokyo.ac.jp/publication.html#papers

    • Related Report
      2023 Annual Research Report

URL: 

Published: 2021-07-13   Modified: 2025-01-30  

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