134 PIVによる開水路植生流れの組織渦の解明

• 禰津 家久

  京都大学大学院

• 鬼束 幸樹

  京都大学大学院

• 定免 英樹

  石川県

書誌事項

タイトル別名

• Investigation on coherent structures in partly vegetated open-channel flows with PIV
• PIV ニヨル カイスイロ ショクセイ ナガレ ノ ソシキ ウズ ノ カイメイ

抄録

Various anemometers, such as a pitot tube, hot-film anemometer and laser Doppler anemometer, have been used to measure the turbulent structures of closed duct flows, boundary layers, open-channel flows and so on. However, it is difficult to investigate of coherent structures such as surface vortices in open-channel flows. In this study, the turbulence measurements of open-channel flows with the vegetated zone at the half channel width were conducted by making use of a Particle Image Velocimetry(PIV). It was found that the horizontal vortices near the free surface are generated by the shear instability which increases with an increase of the vegetation density and also that the horizontal vortices were affected strongly by the vegetation density.

収録刊行物

• 可視化情報学会誌

  可視化情報学会誌 18 (Supplement1), 145-148, 1998

  社団法人 可視化情報学会

詳細情報

• CRID: 1390001204619625728
• NII論文ID: 10002675630
• NII論文ID: 130003648863
• NII書誌ID: AN10374478
• DOI: 10.3154/jvs.18.supplement1_145
• ISSN: 1884037X
• ISSN: 09164731
• NDL書誌ID: 4511032
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4511032
• 本文言語コード: ja
• データソース種別:
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• 抄録ライセンスフラグ: 使用不可