リングかく乱を受けた円管内乱流の乱流場の測定

• 宇都宮 浩司

• 西 茂夫

• 大坂 英雄

書誌事項

タイトル別名

• Turbulent Flow Measurements behind an Attached Ring-Type Manipulator in Turbulent Pipe Flow.
• リングカク ラン オ ウケタ エンカンナイ ランリュウ ノ ランリュウバ ノ

抄録

The response of a fully developed turbulent pipe flow, in which air was flowing at Reynolds number of 6.2×10⁴, to a pulsewise disturbance due to an attached ring-type manipulator with rectangular cross section, was investigated by measuring turbulent flow field. The results indicate that the response of turbulence flow field delayed as compared with that of mean flow field. Close to the wall, the values of turbulence intensities and Reynolds shear stress profiles definitely decrease being incidental to the decrease of wall shear stress. Whereas at the locus of a ring height all the turbulence quantities take a peak value based on the development of the separated shear layer. The separated shear layer accompanying with the separation and the reattachment process have a intermediate feature between the case of upstanding roughness and downward step. Present flow field disturbed by the ring-type manipulator is classified into six region determined from the mean flow and turbulence flow characteristics.

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 (620), 1000-1008, 1998

  一般社団法人 日本機械学会

キーワード

• Relaxation Process

詳細情報

• CRID: 1390282680871024256
• NII論文ID: 130004080078
• NII論文ID: 110002396889
• NII書誌ID: AN00187441
• DOI: 10.1299/kikaib.64.1000
• ISSN: 18848346
• ISSN: 03875016
• NDL書誌ID: 4469228
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4469228
• Web Site: http://www.jstage.jst.go.jp/article/kikaib1979/64/620/64_620_1000/_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