浮遊液滴の回転変形挙動に及ぼす粘性の影響に関する研究 The Effects of Viscosity on the Deformation Behavior of Rotating Liquid Drop

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The electrostatic levitation technique makes it possible to measure thermo-physical properties of extremely high-temperature molten materials. In the technique, viscosity of levitated sample has been estimated from the damping constant time with an oscillating drop method based on linear approximations. However, this method is limited to low-viscosity fluids because the oscillation could not be excited to a highly viscous liquid drop. The measurement method which can be applied to viscosity over the entire range possible has not been established yet. The main purpose of the present study is to investigate the possibility to measure viscosity of entire range with a levitating liquid drop. In the present study, viscous drops were levitated by the electrostatic force. The effect of viscosity on the deformation of a rotating liquid drop was experimentally investigated. As a result, the rotational deformation of a low-viscosity drop is found to be qualitatively similar to the numerical result. On the other hand, large differences from the numerical result are observed in the case of high-viscosity drops. It is confirmed especially that viscosity is closely related to the evolution of drop shape during the drop breakup process. From the experimental results, it is clarified that the viscosity of a levitating liquid drop can be estimated from the breakup behavior of the drop.

収録刊行物

  • 混相流研究の進展 : 年会講演会論文精選集 = Progress in multiphase flow research  

    混相流研究の進展 : 年会講演会論文精選集 = Progress in multiphase flow research (2008), 59-65, 2008-06-15 

    THE JAPANESE SOCIETY FOR MULTIPHASE FLOW

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各種コード

  • NII論文ID(NAID)
    10021154356
  • NII書誌ID(NCID)
    AA12204080
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    18815804
  • NDL 記事登録ID
    9553824
  • NDL 雑誌分類
    ZM17(科学技術--科学技術一般--力学・応用力学)
  • NDL 請求記号
    Z74-E929
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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