振動格子乱流場での気液間相互作用による乱流特性変化

• 宇都宮 千博

  静岡大学大学院工学研究科

• 森川 康一

  静岡大学大学院工学研究科

• 浦野 繁幸

  静岡大学大学院工学研究科

• 真田 俊之

  静岡大学工学部

• 齋藤 隆之

  静岡大学創造科学技術大学院

書誌事項

タイトル別名

• Turbulence Modulation Induced by Bubble-Liquid Mutual Interaction in an Oscillating-Grid Turbulence
• シンドウ コウシ ランリュウバ デノ キエキカン ソウゴ サヨウ ニ ヨル ランリュウ トクセイ ヘンカ

抄録

Turbulence modulation induced by bubble swarms was experimentally investigated. Homogeneous isotropic turbulence is formed by using an oscillating grid in a cylindrical acrylic vessel. The bubble size and generation frequency are completely controlled using a bubble generator. A bubble swarm is generated at a frequency of 4 Hz and consists of 19 bubbles of 2.8 mm in equivalent diameter. The liquid phase velocities were measured via two LDA (Laser Doppler Anemometer). Turbulence intensity, spatial correlation and integral scale were evaluated from the LDA data obtained by the two spatially-separate-point measurement. The turbulence intensity dramatically changed by adding bubble swarms. The original isotropic turbulence was modulated to the anisotropic turbulence by the mutual interaction between bubble swarms and ambient isotropic turbulence. The turbulence modulation was also confirmed by the integral scale.

収録刊行物

• 混相流研究の進展

  混相流研究の進展 3 9-15, 2008

  日本混相流学会

キーワード

• Bubbly flow
• Turbulence modulation
• LDA
• Oscillating-grid turbulence

詳細情報

• CRID: 1390282680251392640
• NII論文ID: 10021154279
• NII書誌ID: AA12204080
• DOI: 10.3811/pmfr.3.9
• ISSN: 18816088
• ISSN: 18815804
• NDL書誌ID: 9553729
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9553729
• 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