定常層流における直角分岐枝管内流れの周期的振動

• 山口 隆平

• 高橋 泰典

• 工藤 奨

• 早瀬 敏幸

書誌事項

タイトル別名

• Periodical Oscillation in Side Branch of Right Angle Branch in Laminar Steady Flow.
• テイジョウ ソウリュウ ニ オケル チョッカク ブンキ シカン ナイ ナガレ ノ シュウキテキ シンドウ

抄録

In the present study, the time variation of flow through the side branch of the right angle branch has been experimentally studied in the laminar steady flow by laser Doppler velocimeter. The side branch 14 mm in diameter bifurcates at right angle from the trunk 24.5 mm in diameter, and the shape of both upstream and downstream corners at the entrance of the side branch is square edge. The flow in the side branch periodically oscillates, and this oscillating flow is a characteristic phenomenon in the right angle branch. The Strouhal number based on the variables in the side branch is proportional to the Reynolds number. It is implied that the oscillating flow might be induced at the boundary between a small vortex formed in the reversing zone in the side branch and a large vortex in the core flow in the side branch. The rotating direction of the small vortex is the same as that of the large vortex.

収録刊行物

• 日本機械学会論文集Ｂ編

  日本機械学会論文集Ｂ編 65 (630), 559-565, 1999

  一般社団法人 日本機械学会

キーワード

• Laser Doppler Velocimeter

詳細情報

• CRID: 1390001205895422208
• NII論文ID: 110002395252
• NII論文ID: 130004223392
• NII書誌ID: AN00187441
• DOI: 10.1299/kikaib.65.559
• ISSN: 18848346
• ISSN: 03875016
• NDL書誌ID: 4670120
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4670120
• Web Site: http://www.jstage.jst.go.jp/article/kikaib1979/65/630/65_630_559/_pdf
• 本文言語コード: ja
• 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