横流れ不安定場における進行波形不安定性に関する研究

• 江上 泰広

• 小濱 泰昭

書誌事項

タイトル別名

• Traveling Instabilities on a Crossflow Instability Dominant Boundary Layer.
• ヨコナガレ フアンテイバ ニ オケル シンコウ ハケイ フアンテイセイ ニカン

抄録

Full turbulent transition is created in three-dimensional (3D) boundary layer on a swept back flat plate with a displacement body system in a wind tunnel. In the case of general crossflow dominant 3D boundary layer transitions, it is known that after crossflow vortices appeared, crossflow-traveling instability appears. However, it is not clear how the crossflow traveling instability starts to appear and what is the roll of it in the transition process. The flow field is measured in detail using hot-wire anemometry and the smoke visualization technique. Visualization of the crossflow traveling instability f₁ is succeeded using high-speed camera. Periodical rolling up vortex motion generated propagating wave with the frequency of f₁. From the results, it can be concluded that crossflow traveling instability f₁ is the inflectional point instability existing in spanwise velocity profile. Such unstable condition is originally generated by the streamwise vortex motion.

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 64 (618), 327-333, 1998

  一般社団法人 日本機械学会

キーワード

• Crossflow Traveling Instability

詳細情報

• CRID: 1390001205895526912
• NII論文ID: 110002396795
• NII論文ID: 130004222856
• NII書誌ID: AN00187441
• DOI: 10.1299/kikaib.64.327
• ISSN: 18848346
• ISSN: 03875016
• HANDLE: 10097/53628
• NDL書誌ID: 4412311
• Web Site: https://tohoku.repo.nii.ac.jp/records/53683
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4412311
• Web Site: http://www.jstage.jst.go.jp/article/kikaib1979/64/618/64_618_327/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可