高熱流束沸騰の固液接触構造のモデル化 A Model for Liquid-Solid Contact in High Heat-Flux Boiling

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The model for high heat-flux boiling, introduced in this paper, is based on a similarity between dropwise condensation and high heat-flux boiling, observed in simultaneous visualization experiment of liquid-solid contact and bubble structure. The bubble coalescing process in boiling on a horizontal flat surface is formulated into integral equations, assuming random positioning of dry patches and bubbles. Taking the nucleation site density and the activeness of nucleation sites, measured by image processing technique, into account, the equations are numerically solved to yield a dry patch diameter distribution as a result of cyclic process of bubble nucleation, transient bubble growth and bubble departure. The three-phase contact-line density, calculated from the dry patch distribution, has a maximum point, similar to that of experimental data. This model has a potential to explain the CHF as the extreme of smooth boiling curve, regarding wall superheat as the driving force of the CHF phenomenon.

収録刊行物

  • 日本機械学會論文集. B編 = Transactions of the Japan Society of Mechanical Engineers. B

    日本機械学會論文集. B編 = Transactions of the Japan Society of Mechanical Engineers. B 69(683), 1659-1665, 2003-07-25

    一般社団法人日本機械学会

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  • Simplified Model Predicting Contact-Line-Length Density at Critical Heat Flux Based on Direct Observation of Boiling Structure

    Nishio Shigefumi , Tanaka Hiroaki

    JSME international journal. Ser. B, Fluids and thermal engineering 45(1), 72-78, 2002-01-01

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被引用文献:  2件中 1-2件 を表示

各種コード

  • NII論文ID(NAID)
    110002388222
  • NII書誌ID(NCID)
    AN00187441
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03875016
  • NDL 記事登録ID
    6653429
  • NDL 雑誌分類
    ZN11(科学技術--機械工学・工業)
  • NDL 請求記号
    Z16-109
  • データ提供元
    CJP書誌  CJP引用  NDL  NII-ELS 
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