2001年
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
水工学論文集
- ,
- ,
- 巻
- 45
- 号
- 開始ページ
- 529
- 終了ページ
- 534
- 記述言語
- 日本語
- 掲載種別
- DOI
- 10.2208/prohe.45.529
- 出版者・発行元
- Japan Society of Civil Engineers
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.
- リンク情報
- ID情報
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- DOI : 10.2208/prohe.45.529
- ISSN : 0916-7374
- CiNii Articles ID : 130003841686