Laboratory observation of breaking criteria of wind-generated deepwater waves

Sang Ho Oh, Natsuki Mizutani, Noriaki Hashimoto, Kyung Duck Suh

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

1 被引用数 (Scopus)

抄録

The present study describes an experimental investigation of breaking criteria of deepwater wind waves under wind action. In a wind wave flume, waves were generated using different wind speeds and measured at different locations to obtain wave trains of no, intermittent, or frequent breaking. Water particle movement and free surface elevation were measured simultaneously using a PIV system and a wave gauge, respectively. For wind waves, not all the waves measured at a fixed location are breaking waves, and the breaking of a larger wave is not guaranteed. However, the larger the wave height, the larger the probability of breaking. In order to take as many breaking waves as possible for the cases of frequent breaking, we used the waves whose heights were close to the highest one-tenth wave height. The experimental results showed that the geometric or kinematic breaking criteria could not explain the occurrence of breaking of wind waves. On the other hand, the vertical acceleration beneath the wave crest was close to the previously suggested limit value, -O.Jg, when frequent breaking of large waves occurred, indicating that the dynamic breaking criterion would be good for predicting breaking waves under strong wind action.

本文言語英語
ホスト出版物のタイトルProceedings of the 29th International Conference on Coastal Engineering 2004, ICCE 2004
編集者Jane McKee Smith, Jane McKee Smith
出版社American Society of Civil Engineers (ASCE)
ページ428-440
ページ数13
ISBN(電子版)9789812562982, 9789812562982
DOI
出版ステータス出版済み - 4月 1 2005
外部発表はい
イベント29th International Conference on Coastal Engineering, ICCE 2004 - Lisbon, ポルトガル
継続期間: 9月 19 20049月 24 2004

出版物シリーズ

名前Proceedings of the Coastal Engineering Conference
2005-January
ISSN(印刷版)0161-3782

その他

その他29th International Conference on Coastal Engineering, ICCE 2004
国/地域ポルトガル
CityLisbon
Period9/19/049/24/04

!!!All Science Journal Classification (ASJC) codes

  • 土木構造工学
  • 海洋工学
  • 海洋学

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