エルボ下流の乱れに及ぼすレイノルズ数の影響

• 河村 勉

• 中尾 俊次

• 高橋 正典

書誌事項

タイトル別名

• Reynolds Number Effect on Turbulence downstream from Elbow Pipe.
• エルボ カリュウ ノ ミダレ ニ オヨボス レイノルズスウ ノ エイキョウ

抄録

Measurements of turbulence intensities downstream from a 90 degree elbow of circular cross section in the case of 1.1, 2 and 4 radius ratios were obtained using a laser-Doppler velocimeter at Reynolds numbers of 5×10⁴-1×10⁶ in order to clarify the Reynolds number effect on turbulence downstream from the elbow. The cross-sectionally averaged turbulence intensity decreased slightly with increasing Reynolds number. The effect of Reynolds number on it near the elbow was smaller than that for fully developed turbulent flow and decreased with decreasing radius ratio. The power spectrum of the turbulence intensity downstream near the elbow with any radius ratio had a distinct peak at the reduced frequency of about 0.5. No marked effect was observed of the Reynolds number on it.

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 68 (667), 645-651, 2002

  一般社団法人 日本機械学会

キーワード

• Reynolds Number

詳細情報

• CRID: 1390282681160424576
• NII論文ID: 130004224473
• NII論文ID: 110002386969
• NII書誌ID: AN00187441
• DOI: 10.1299/kikaib.68.645
• ISSN: 18848346
• ISSN: 03875016
• NDL書誌ID: 6116826
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6116826
• Web Site: http://www.jstage.jst.go.jp/article/kikaib1979/68/667/68_667_645/_pdf
• 本文言語コード: ja
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
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