閉鎖性水域の風波発生下での乱れ構造及びバーストの周期について

• 禰津 家久

  京都大学大学院環境地球工学専攻

• 牛島 省

  京都大学大学院環境地球工学専攻

• 井上 理恵

  京都大学大学院環境地球工学専攻

書誌事項

タイトル別名

• TURBULENT STRACTURE AND BURSTING PERIOD IN WIND/WATER WAVES IN CLOSED BASIN

抄録

Downward-bursting phenomena in water beneath wind waves is important in the process of the momentum, heat and mass transfer across the air-water interface. The coherent structure is closely related to the wind-waves in specially DBBL (downward-bursting boundary layer, about 3-7 times depth of the significant wave height). The turbulent inten-sities and Reynolds stress (-uv) in closed wind water waves could be expressed by the parameters of wind-waves, the intensity of water depth fluctuation and the peak frequency.<BR>To estimate the bursting period, the u-v quadrant threshold technique is applied to the streamwise velocity signals in the water flows. The bursting period is in a good agreement with the behavior of time series of Reynolds stress (-uv). As a result, it became clear that the bursting period has a close connection with the peak frequency of wind-waves.

収録刊行物

• 水工学論文集

  水工学論文集 45 529-534, 2001

  公益社団法人 土木学会

キーワード

• wind-water waves
• significant wave height
• peak frequency
• bursting period

詳細情報

• CRID: 1390001205170742016
• NII論文ID: 130003841686
• DOI: 10.2208/prohe.45.529
• ISSN: 18849172
• ISSN: 09167374
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可