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Ice nucleation of water droplet in supersonic air streams

Research Project

Project/Area Number 21760145
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Fluid engineering
Research InstitutionFukuoka Industrial Technology Center

Principal Investigator

SHUZENJI Kiyotaka  福岡県工業技術センター, 機械電子研究所, 研究員 (00416504)

Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2010: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords混相流 / 氷核生成 / 熱工学 / 流体工学
Research Abstract

The process of the atomization of water and the ice nucleation of the droplet in Laval nozzle were investigated through the experiment with a phase Doppler particle analyzer and the unsteady thermal conductive analysis by the Heisler chart. The experimental results show that the droplet was atomized and accelerated primarily in the region of 60mm downstream from the throat. The profile of the axial velocity at the nozzle exit is similar to the shape of Hagen-Poiseuille flow which fully developed. The axial mean velocity and the arithmetic mean diameter were 473m/s and 5.6um respectively at the nozzle exit with the water flow rate of 10 mL/min. The thermal conductive analyses indicate that the droplet which diameter is smaller than 5 um freezes inside the nozzle regardless the relative velocity for the air streams.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (5 results)

All 2011 2010 2009

All Journal Article (2 results) (of which Peer Reviewed: 1 results) Presentation (1 results) Book (2 results)

  • [Journal Article] マイクロアイスジェット洗浄技術2009

    • Author(s)
      周善寺清隆、星野高明
    • Journal Title

      砥粒加工学会誌

      Pages: 548-551

    • NAID

      10025103314

    • Related Report
      2011 Final Research Report
  • [Journal Article] マイクロアイスジェット洗浄技術2009

    • Author(s)
      星野高明, 周善寺清隆
    • Journal Title

      砥粒加工学会誌 53

      Pages: 548-551

    • NAID

      10025103314

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Presentation] 超音速空気流れによる水の微粒化2011

    • Author(s)
      周善寺清隆
    • Organizer
      第20回微粒化シンポジウム
    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Book] 先端産業分野における洗浄技術2010

    • Author(s)
      星野高明、周善寺清隆
    • Total Pages
      37
    • Related Report
      2011 Final Research Report
  • [Book] 先端産業分野における洗浄技術2010

    • Author(s)
      星野高明, 周善寺清隆
    • Total Pages
      305
    • Publisher
      シーエムシー出版
    • Related Report
      2009 Annual Research Report

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Published: 2009-04-01   Modified: 2016-04-21  

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