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Multiscale analysis for controlling interface shape of gas-liquid micro flow systems

Research Project

Project/Area Number 24560185
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Fluid engineering
Research InstitutionOsaka University (2014)
Institute of Physical and Chemical Research (2012-2013)

Principal Investigator

SUGIYAMA KAZUYASU  大阪大学, 基礎工学研究科, 教授 (50466786)

Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywords数値流体力学 / 気液二相流 / 流体工学 / シミュレーション工学
Outline of Final Research Achievements

Numerical methods for simulating an interface deformation and a bubble formation in a gas-liquid micro flow system has been equipped. In consideration of the liquid inertia, the basic equations, we employed, consist of the Laplace law and the two-dimensional Euler-Darcy equation under the assumption of Hele-Shaw's flow owing to a large width-to-thickness aspect ratio of the microchannel. The equations are numerically solved by means of a boundary element method, and the temporal change in the profile of the gas-liquid interface is captured. The simulated results in a T-shaped microchannel, which consists of two inlets for gas and liquid and a outlet for gas-liquid mixture, well reproduce the experimentally observed behaviors that the interface pinches off at the channel junction and then a bubble forms, and imply the relevance of the liquid inertia to the bubble formation.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (3 results)

All 2015 2014

All Presentation (3 results)

  • [Presentation] 薄型マイクロチャネルにおける微細気泡生成の数値解析2015

    • Author(s)
      大久保 秀彦, 杉山 和靖
    • Organizer
      混相流シンポジウム2015
    • Place of Presentation
      高知工科大学(高知県香美市)
    • Year and Date
      2015-08-04 – 2015-08-06
    • Related Report
      2014 Annual Research Report
  • [Presentation] T字型マイクロチャネルにおける微小気泡生成機構2015

    • Author(s)
      大久保 秀彦, 杉山 和靖
    • Organizer
      日本機械学会 関西学生会平成26年度学生員卒業研究発表講演会
    • Place of Presentation
      京都大学 桂キャンパス(京都府京都市)
    • Year and Date
      2015-03-16 – 2015-03-17
    • Related Report
      2014 Annual Research Report
  • [Presentation] 適応パラメータを持つ擬似圧縮性解法2014

    • Author(s)
      杉山 和靖
    • Organizer
      第28 回数値流体力学シンポジウム
    • Place of Presentation
      タワーホール船堀(東京都江戸川区)
    • Year and Date
      2014-12-09 – 2014-12-11
    • Related Report
      2014 Annual Research Report

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Published: 2013-05-31   Modified: 2019-07-29  

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