乱流摩擦抵抗減少に及ぼすリブレット形状の影響

• 岡本 史紀

• 内田 朋宏

• 米山 竜也

• 滝口 和夫

• 木村 真

書誌事項

タイトル別名

• Effect of Riblet Shape on Turbulent Drag Reduction.
• ランリュウ マサツ テイコウ ゲンショウ ニ オヨボス リブレット ケイジョウ ノ エイキョウ

抄録

This paper presents an effect of riblet shape on turbulent drag reduction. The experiment was carried out in an N.P.L.blow-down-type wind tunnel with a working section of 500mm×500mm×2000mm. In order to investigate the details of drag reduction for riblet shape, rib models of scaling up riblets were used in this experiment. The parameters were 5 kinds for the rib model and 7 kinds for the riblet model. The time-mean velocity and skin friction were measured by the Pitot and static pressure tubes and Preston tube respectively. The Reynolds stress was obtained using the data processing system connected to a hot wire anemometer. Consequently it was found that(i)the Reynolds stress and skin friction become smallest near the surface for the rib with the section of an equilateral triangle, and(ii)the drag reduction attains maximum for the riblet of V groove with nearly equilateral triangular section.

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 66 (642), 374-382, 2000

  一般社団法人 日本機械学会

キーワード

• Riblet

詳細情報

• CRID: 1390282681159330688
• NII論文ID: 110002392785
• NII論文ID: 130004080356
• NII書誌ID: AN00187441
• DOI: 10.1299/kikaib.66.374
• ISSN: 18848346
• ISSN: 03875016
• NDL書誌ID: 5287257
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5287257
• Web Site: http://www.jstage.jst.go.jp/article/kikaib1979/66/642/66_642_374/_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