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Pumping-up tansition of high visous fluid and generation mechanism of liquid-filament under the centrifugal force field by a rotating cone

Research Project

Project/Area Number 16K06066
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Fluid engineering
Research InstitutionAkita University

Principal Investigator

Adachi Takahiro  秋田大学, 理工学研究科, 教授 (60344769)

Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords回転円すい / 膜状揚水 / 糸状揚水 / 揚水 / 膜状 / 糸状 / レイリー・テイラー不安定性 / 流れパターンの遷移 / 微粒化
Outline of Final Research Achievements

When a cone is immersed in water and rotated, a filmwise flow is pumped up along the outer surface of the cone. In the case of Newtonian fluid that is more viscous than water, filament-wise pumping-up flow appears on the outer surface of the cone due to the effect of spinnability. At this time, the liquid does not scatter despite the centrifugal force acting on the pumped flow on the outer surface of the cone. We investigated the mechanism of successful formation of liquid filament-wise flow from using the transition phenomenon from filmwise pumping to filament-wise pumping. In this study, the generation conditions of the filmwise pumping and the filament-wise pumping were clarified with respect to the change of the rotation speed and the viscosity. Moreover, the value of power required for pumping was clarified.

Academic Significance and Societal Importance of the Research Achievements

本研究では、液糸の生成方法について研究を行なった。円すいを回転させる方法を用い、これまでとは異なる製法を用いることで、必要となる消費動力の低減にもつながる可能性を有することを見いだした。このような方法は、コロナ対策で品不足となった不織布マスクを生成することに応用できる。日本の繊維産業が急速なテンポで縮小を余儀なくされきた中で、不織布だけは確実な成長を遂げており、生活に密着した分野から工業分野にいたる幅広い分野の新用途で発展が期待できる。

Report

(4 results)
  • 2019 Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (15 results)

All 2018 2017 2016

All Journal Article (6 results) (of which Peer Reviewed: 2 results) Presentation (9 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] Effect of Viscosity on Pumping-Up of Newtonian Fluid Driven by a Rotating Cone2018

    • Author(s)
      Takahiro Adachi, Yutaro Takahashi, Takeshi Akinaga, Junnosuke Okajima
    • Journal Title

      Journal of Flow Control, Measurement & Visualization

      Volume: 6 Pages: 57-65

    • Related Report
      2018 Research-status Report 2017 Research-status Report
  • [Journal Article] 回転円すいによる糸状揚水を用いた繊維製造技術への応用2018

    • Author(s)
      足立 高弘
    • Journal Title

      ケミカル エンジニヤリング

      Volume: 63 Pages: 15-18

    • Related Report
      2018 Research-status Report
  • [Journal Article] 回転円すいを用いた繊維製造と不織布への応用2018

    • Author(s)
      足立 高弘
    • Journal Title

      プラスチックス ( 日本プラスチックス工業連盟誌 )

      Volume: 69 Pages: 47-50

    • Related Report
      2018 Research-status Report
  • [Journal Article] Correlation of Rotation Rate, Viscosity and Immersed Diameter on the Threshold of Pumping-up Phenomena using Rotating Cones2018

    • Author(s)
      Jun Kanamori, Takahiro Adachi, Junnosuke Okajima
    • Journal Title

      Journal of Mechanical and Production Engineering

      Volume: 6 Pages: 51-55

    • Related Report
      2018 Research-status Report
  • [Journal Article] Correlation of oxygen mass transfer and power consumption in an aeration system by a rotating cone2018

    • Author(s)
      Adachi, T., Kubo, T., Higashiono, K., Terashima, M., Takahashi, Y.
    • Journal Title

      Chemical Engineering and Processing - Process Intensification

      Volume: 60 Pages: 60-70

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Film Flow Thickness along the Outer Surface of Rotating Cones2018

    • Author(s)
      Takahiro Adachi, Yutaro Takahashi and Junnosuke Okajima
    • Journal Title

      European Journal of Mechanics / B Fluids

      Volume: 68 Pages: 39-44

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] Correlation of rotation rate, viscosity and immersed diameter on the threshold of pumping-up phenomena using rotating cones2018

    • Author(s)
      Jun Kanamori, Takahiro Adachi and Junnosuke Okajima
    • Organizer
      397th International Academic Conference on Development in Science and Technology, Taipei, Taiwan
    • Related Report
      2018 Research-status Report
  • [Presentation] Transition of pumping-up flow patterns with high viscosity in a centrifugal force field by rotating cones2018

    • Author(s)
      Jun Kanamori, Takahiro Adachi and Junnosuke Okajima
    • Organizer
      15th International Conference on Flow Dynamics, Sendai, Japan
    • Related Report
      2018 Research-status Report
  • [Presentation] Effect of Viscosity on Pumping-up of Newtonian Fluid Driven by Rotating Cone2017

    • Author(s)
      Yutaro Takahashi, Takahiro Adachi, Takeshi Akinaga and Junnosuke Okajima
    • Organizer
      14th International Conference on Flow Dynamics, Sendai, Japan
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Power consumption of liquid atomization device by using rising film flow along a rotating cone and disk2017

    • Author(s)
      Yutaro Takahashi, Takahiro Adachi and Junnosuke Okajima
    • Organizer
      2nd International Conference on Fluid Dynamics & Aerodynamics, Rome, Itary
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 回転円すいを用いた高粘度溶液の揚水遷移と内部循環流の可視化2017

    • Author(s)
      髙橋 雄太郎・足立 高弘
    • Organizer
      日本機械学会東北支部第53期秋季講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] Heat and Fluid Flow Characteristics of Liquid Film Flow along Heat Transfer Surface with Microscopic Grooves2016

    • Author(s)
      Koji Higashiono, Takahiro Adachi, Yuutarou Takahashi, Junnosuke Okajima and Takeshi Akinaga
    • Organizer
      Proc. 13th International Conference on Fluid Dynamics, Sendai, Japan
    • Place of Presentation
      Sendai International center
    • Year and Date
      2016-10-10
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] 回転円すいによる周囲環境の熱制御および溶存酸素の移動促進2016

    • Author(s)
      東大野晃慈・足立高弘
    • Organizer
      日本機械学会東北支部第52期秋季講演会・講演会論文集
    • Place of Presentation
      秋田県民会館 ジョイナス
    • Year and Date
      2016-09-17
    • Related Report
      2016 Research-status Report
  • [Presentation] 回転円すいによる周囲環境の熱および溶存酸素の同時制御と消費動力2016

    • Author(s)
      東大野晃慈・足立高弘・寺嶋光春
    • Organizer
      第19回日本水環境学会シンポジウム・講演会
    • Place of Presentation
      秋田県立大学
    • Year and Date
      2016-09-13
    • Related Report
      2016 Research-status Report
  • [Presentation] Correlation of Oxygen Transfer and Power Consumption in an Aeration System by a Rotating Cone2016

    • Author(s)
      Koji Higashiono, Takahiro Adachi and Toshiki Kubo
    • Organizer
      International Symposium on Green Manufacturing and Applications 2016
    • Place of Presentation
      Bali Nusa Dua Cionvention Center
    • Year and Date
      2016-06-21
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2021-02-19  

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