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Suspension Rheology Control and Rheology Assessment System Learned from Red Blood Cells

Research Project

Project/Area Number 20K04266
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 19010:Fluid engineering-related
Research InstitutionKyoto Institute of Technology

Principal Investigator

Fukui Tomohiro  京都工芸繊維大学, 機械工学系, 准教授 (00451542)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywordsレオロジー / 懸濁液 / 混相流 / 非ニュートン流体 / 粒子懸濁液
Outline of Research at the Start

微小循環系では,赤血球の機能的な運動により,効果的な物質交換を達成するためのレオロジーコントロールが自発的に行われている.本研究では,このような機能性流体の創製を目指し,懸濁液のレオロジーコントロールならびに,微細構造解析に基づく新たなレオロジー同定法の提案を目的とする.また,瞬時速度場から懸濁液の粘性の強さとその性質,さらには,それらの時間的・空間的分布の評価を可能とするような,粘度計を用いない粘度計測法を提案する.

Outline of Final Research Achievements

In a narrow channel, the apparent relative viscosity of a suspension with finite-size particles is strongly dependent on its microscopic particle arrangement. In this study, we focus on the inertia and concentration of particles in a narrow channel and consider their effects on the microscopic particle arrangement and macroscopic suspension rheology. The results demonstrated that the velocity profiles for the particle suspension were changed by the Reynolds number and particle concentration because of the interactions between particles according to the power-law index. These changes affected the particle equilibrium positions in the channel, and the subsequent changes in solvent layer thickness caused changes in the macroscopic apparent viscosity. The behavior of microscopic particles played important roles in determining macroscopic rheology.

Academic Significance and Societal Importance of the Research Achievements

本研究成果により,次のような学術的・社会的意義が示された.まず,粒子慣性力と力学的平衡位置の関係の体系的な理解が一層深まることにより,懸濁液のレオロジーコントロールが可能であることが期待された.次に,アインシュタインの粘度式を適用することができない力学環境においても,新しく提案した粘度推定式により,様々な分散状態における瞬時速度場のスナップショットから,懸濁液の実効粘度評価が可能であることが期待された.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (10 results)

All 2023 2022 2021 2020

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 6 results) Presentation (4 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] Numerical Study of the Effects of Asymmetric Velocity Profiles on Migration of Neutral Buoyant Particle2023

    • Author(s)
      Ryo Naito and Tomohiro Fukui
    • Journal Title

      Fluids

      Volume: 8(2) Issue: 2 Pages: 1-17

    • DOI

      10.3390/fluids8020069

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Numerical Study of Microscopic Particle Arrangement of Suspension Flow in a Narrow Channel for the Estimation of Macroscopic Rheological Properties2022

    • Author(s)
      Tomohiro Fukui and Misa Kawaguchi
    • Journal Title

      Advanced Powder Technology

      Volume: 33 Issue: 12 Pages: 1-10

    • DOI

      10.1016/j.apt.2022.103855

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comparative Study of the Virtual Flux Method and Immersed Boundary Method Coupled with Regularized Lattice Boltzmann Method for Suspension Flow Simulations2022

    • Author(s)
      Misa Kawaguchi, Tomohiro Fukui, and Koji Morinishi
    • Journal Title

      Computers & Fluids

      Volume: 246 Pages: 105615-105615

    • DOI

      10.1016/j.compfluid.2022.105615

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Influence of each cylinder’s contribution on the total effective viscosity of a two-dimensional suspension by a two-way coupling scheme2021

    • Author(s)
      Naoki Okamura, Tomohiro Fukui, Misa Kawaguchi, and Koji Morinishi
    • Journal Title

      Journal of Fluid Science and Technology

      Volume: 16 Issue: 3 Pages: JFST0020-JFST0020

    • DOI

      10.1299/jfst.2021jfst0020

    • NAID

      130008097880

    • ISSN
      1880-5558
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Numerical simulation on the effects of power-law fluidic properties on the suspension rheology2021

    • Author(s)
      Miho Tanaka, Tomohiro Fukui, Misa Kawaguchi, and Koji Morinishi
    • Journal Title

      Journal of Fluid Science and Technology

      Volume: 16 Issue: 3 Pages: JFST0022-JFST0022

    • DOI

      10.1299/jfst.2021jfst0022

    • NAID

      130008097874

    • ISSN
      1880-5558
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Contribution of Particle-wall Distance and Rotational Motion of a Single Confined Elliptical Particle to the Effective Viscosity in Pressure-driven Plane Poiseuille Flows2021

    • Author(s)
      Misa Kawaguchi, Tomohiro Fukui, and Koji Morinishi
    • Journal Title

      Applied Sciences

      Volume: 11(5) Issue: 15 Pages: 1-18

    • DOI

      10.3390/app11156727

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Particle Suspension Flow Simulations in a Narrow Channel by Parallel Computing2022

    • Author(s)
      Tomohiro Fukui, Misa Kawaguchi, and Koji Morinishi
    • Organizer
      33rd International Conference on Parallel Computational Fluid Dynamics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A Consideration on Microstructure of Particle Suspension to Estimate its intrinsic Viscosity2021

    • Author(s)
      Tomohiro Fukui, Misa Kawaguchi, and Koji Morinishi
    • Organizer
      11th International Conference on Advances in Fluid Dynamics with emphasis on Multiphase and Complex Flow
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Numerical Study on Microstructure of a Dilute Suspension to Assess its Thixotropic Behavior by a Two-way Coupling Scheme2020

    • Author(s)
      Tomohiro Fukui, Misa Kawaguchi, and Koji Morinishi
    • Organizer
      13th International Conference on Advances in Fluid Mechanics
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Pressure-driven Suspension Flow Simulation to Assess the Temporal Changes in its Microstructure2020

    • Author(s)
      Tomohiro Fukui, Misa Kawaguchi, and Koji Morinishi
    • Organizer
      31st International Symposium on Transport Phenomena
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2024-01-30  

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