• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of technologies for controlling dispersion behaviors and multiphase flows through surface functionalization

Research Project

Project/Area Number 23K22670
Project/Area Number (Other) 22H01399 (2022-2023)
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeMulti-year Fund (2024)
Single-year Grants (2022-2023)
Section一般
Review Section Basic Section 19010:Fluid engineering-related
Research InstitutionKyoto Institute of Technology

Principal Investigator

Kitagawa Atsuhide  京都工芸繊維大学, 機械工学系, 教授 (80379065)

Co-Investigator(Kenkyū-buntansha) 高木 知弘  京都工芸繊維大学, 機械工学系, 教授 (50294260)
外岡 大志  京都工芸繊維大学, 機械工学系, 准教授 (50745031)
村井 祐一  北海道大学, 工学研究院, 教授 (80273001)
渡村 友昭  東京大学, 大学院工学系研究科(工学部), 講師 (40777736)
Project Period (FY) 2024-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2024: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2023: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2022: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Keywords混相流 / 分散体 / 濡れ性 / 機能表面 / 境界層制御
Outline of Research at the Start

抵抗低減・伝熱促進・反応促進技術では,壁面近傍における分散体が従来の単相流の経験則から大きく逸脱する効果をもたらす.本研究では,申請者らが世界をリードする壁面濡れ性複合技術の高度化を図り,分散体群の挙動を制御する.壁表面の物理的構造・化学的性質と分散体挙動との関係を多角的に評価するため,マイクロチャネル流れ・界面衝突流れ・水平チャネル流れ・テイラークエット流れを実験・数値計算の双方向から究明する.これら4つの流場で発見される各々の特異性を研究従事者間でデータ共有し,分散体の機能性に対する共通則を見出す.これにより分散体・混相流制御技術を基盤とした新しい境界層制御論の体系化を実現する.

Outline of Final Research Achievements

This study investigated four kinds of flows with the aim of controlling dispersion behaviors and flow structures through the surface functionalization. For flows in microchannels with hydrophilic/hydrophobic (HPI/HPO) patterned substrates, measurements found the optimal liquid flow rate for the highest droplet shape uniformity. Direct numerical simulations of flows in rotating double cylinders revealed that at low Reynolds numbers, the drag estimated by the proposed method was in good agreement with the analytical solution. Experimental results for flows in horizontal channels with HPO surfaces showed that the bubble transport by HPO strips depended strongly on the number of the HPO strips and the distance between the strips. Finally, experimental results for turbulent channel flows with surfactants showed that the suppression of bubble coalescence due to surfactants led to several bubble distribution patterns in the boundary layer.

Academic Significance and Societal Importance of the Research Achievements

学術的意義:本研究で得られた成果を利用することにより,気液二相流および液液二相流に関する数理モデルや数値計算手法の開発に貢献することができる.
社会的意義:本研究で得られた成果は抵抗低減・伝熱促進・反応促進・分子解析技術に利用可能であることから,機械・化学・船舶・バイオ・医療などの幅広い分野での発展に貢献できる.

Report

(4 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Annual Research Report
  • 2022 Annual Research Report
  • Research Products

    (21 results)

All 2025 2024 2023 2022

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (20 results) (of which Int'l Joint Research: 5 results,  Invited: 3 results)

  • [Journal Article] Transition of flow between eccentrically rotating double cylinders2025

    • Author(s)
      Tomoaki Watamura, Kazuyasu Sugiyama, Shu Takagi
    • Journal Title

      International Journal of Multiphase Flow

      Volume: 189 Pages: 1-11

    • DOI

      10.1016/j.ijmultiphaseflow.2025.105236

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 親水疎水マイクロパターン基板を用いた水滴形成手法の改良による水滴形状のばらつき低減効果の検証2025

    • Author(s)
      田口綾乃,外岡大志
    • Organizer
      2024年度関西学生会学生員卒業研究発表講演会
    • Related Report
      2024 Annual Research Report
  • [Presentation] 水平チャネル内気泡流における気泡疎密構造の空間発展2025

    • Author(s)
      高橋大地,堀本康文,朴炫珍,田坂裕司,村井祐一
    • Organizer
      日本機械学会北海道学生会 第54回 学生員卒業研究発表講演会
    • Related Report
      2024 Annual Research Report
  • [Presentation] 壁乱流中の気液二相流パターンと壁面性状操作の効果2024

    • Author(s)
      村井祐一,北川石英,Yoon Dongik
    • Organizer
      第61回日本伝熱シンポジウム
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] 3つの流れ場における気泡クラスタリングの共通点と差異2024

    • Author(s)
      村井祐一,堀本康文,朴 炫珍,田坂裕司
    • Organizer
      混相流シンポジウム2024
    • Related Report
      2024 Annual Research Report
  • [Presentation] 回転偏心二重円筒間における流動抵抗の変調2024

    • Author(s)
      渡村友昭,杉山和靖,高木周
    • Organizer
      第67回理論応用力学講演会
    • Related Report
      2024 Annual Research Report
  • [Presentation] Air bubble transport in horizontal channel flows using multiple hydrophobic strips2024

    • Author(s)
      Kazuki Sato, Sakura Iwashita, Atsuhide Kitagawa
    • Organizer
      Proc. 34th International Symposium on Transport Phenomena
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 親疎水マイクロパターン基板による大規模な脂質二重膜チャンバアレイの実現に向けた条件検討2024

    • Author(s)
      上北江里華,外岡大志
    • Organizer
      日本機械学会関西支部卒研発表講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 界面活性剤の添加がもたらすテイラー・クエット流れの乱流境界層変調2024

    • Author(s)
      山岸玄暉,堀本康文,朴炫珍,田坂裕司,村井祐一
    • Organizer
      日本機械学会北海道支部第53回学生員卒業研究発表講演会講演論文集
    • Related Report
      2023 Annual Research Report
  • [Presentation] 撥水面を用いた水平チャネル内乱流における空気気泡輸送2023

    • Author(s)
      佐藤和輝,中川拓真,北川石英
    • Organizer
      第51回 可視化情報シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] 回転偏心二重円筒内の流動遷移と抵抗の数値予測2023

    • Author(s)
      渡村友昭,杉山和靖
    • Organizer
      日本流体力学会年会2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] 機能表面を利用した気泡運動制御2023

    • Author(s)
      北川石英
    • Organizer
      日本機械学会 関西支部 第24回秋季技術交流フォーラム
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Rheology of a dilute bubble suspension in unsteady shear flows2023

    • Author(s)
      K.Ohie, Y.Tasaka, Y.Murai
    • Organizer
      Proc. 76th Annual Meeting of the APS Division of Fluid Dynamics
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 気泡を利用した伝熱促進と表面の機能化による気泡運動制御2023

    • Author(s)
      北川石英
    • Organizer
      日本冷凍空調学会調査研究プロジェクト
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] デカルト座標系上における回転偏心二重円筒内の流体力評価2023

    • Author(s)
      渡村友昭,杉山和靖,高木周
    • Organizer
      第37回数値流体力学シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] 超撥水面を利用した空気気泡輸送2023

    • Author(s)
      佐藤和輝,中川拓真,北川石英
    • Organizer
      2022年度関西学生会学生員卒業研究発表講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Cross-flow transport of bubbles by a hydrophobic strip in a turbulent channel flow2022

    • Author(s)
      A. Kitagawa, Y. Murai
    • Organizer
      Japan-U.S. Seminar on Two-Phase Flow Dynamics 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Rainbow-color imaging of microbubbles strongly clustering in a turbulent boundary layer2022

    • Author(s)
      Y.Murai, D.Saito, H.J.Park, Y.Tasaka
    • Organizer
      Proc. 20th Int. Symp. Applications of Laser and Imaging Techniques to Fluid Mechanics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of local turbulent eddy viscometry2022

    • Author(s)
      A.Takano, K.Ohie, Y.Horimoto, Y.Tasaka,Y. Murai
    • Organizer
      Proc. 14th European Fluid Mechanics Conference
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 微小気泡・微小粒子を高濃度に含む界面レオロジーの計測2022

    • Author(s)
      村井祐一,山岸俊太,Peter Fischer
    • Organizer
      日本レオロジー学会_第70回レオロジー討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 流速分布計測に基づく渦粘度計測システムの開発2022

    • Author(s)
      高野哲秀,大家広平,堀本康文,朴炫珍,田坂裕司,村井祐一
    • Organizer
      日本機械学会 第100期 流体工学部門 講演会2022
    • Related Report
      2022 Annual Research Report

URL: 

Published: 2022-04-19   Modified: 2026-01-16  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi