液中に侵入する固体球後方に形成される残留気泡体積

• 加藤 健司

  大阪市立大学大学院工学研究科

• 南 亮輔

  大阪市立大学大学院工学研究科

• 脇本 辰郎

  大阪市立大学大学院工学研究科

• 植田 芳昭

  摂南大学工学部

• 井口 学

  大阪電通大学工学部

書誌事項

タイトル別名

• Residual Bubble Volume Formed behind a Sphere Plunging into Liquid Bath
• エキ チュウ ニ シンニュウ スル コタイキュウ コウホウ ニ ケイセイ サレル ザンリュウ キホウ タイセキ
• Residual bubble formed behind a sphere plunging into liquid bath (in Japanese)

抄録

An air cavity is formed behind a spherical particle plunging into a liquid bath. The residual bubble attached to the sphere has an important effect on the performance of CaO particle used for desulfurization of melted iron. Based on the water model with the same kinematic viscosity as the melted iron, the behavior of air cavity was observed for the spheres coated by two kinds of water repellent preparations. In this report, the volume of residual bubble was theoretically estimated for the quasi-static immersion of sphere as a reference condition. First the critical depth at which the axi-symmetric meniscus breaks is obtained by using Laplace equation. Then the bubble volume was obtained from a simple energy minimum principle in which we considered the effect of the interfacial energy including the wetting behavior and the liquid potential energy. The calculated volumes can approximate fairly well the measured results for two kinds of contact angles of 115° and 162°.

収録刊行物

• 混相流

  混相流 28 (5), 547-553, 2015

  日本混相流学会

キーワード

• Air cavity
• Spherical particle
• Wettability
• Residual bubble
• Contact angle

詳細情報

• CRID: 1390001204438241280
• NII論文ID: 130005067789
• NII書誌ID: AN10088286
• DOI: 10.3811/jjmf.28.547
• ISSN: 18815790
• ISSN: 09142843
• NDL書誌ID: 026263843
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026263843
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可