An experimental study on nonlinear wave dynamics: Rouge wave generation and wave blocking

Wen Yang Hsu, Igor Shugan, Wen Son Chiang, Ray Yeng Yang, Hwung Hweng Hwung, Sergey Kuznetsov, Yana Saprykina

研究成果: Conference contribution

摘要

Wave modulation due to Bengamin Feir Instability (BFI) in the presence of long wave (swell) is investigated in the elaborate experiments. The mechanically generated waves are composed of three discrete waves; while the newly generated harmonics due to BFI still combining into discrete spectra with the same frequency difference step. These stable discrete waves allow us to further examine the basic properties of nonlinear wave-wave interactions, such as the variation of phase speeds and wave numbers along the wave tank together with speed of crests, especial for the large transient waves. The measured values have a reasonable correspondence to the available nonlinear model estimations. The technique proposed in this study is verified to accurately measure the phase speed and wave number of each harmonic in the wave group. Phase speeds of short waves have a significant amplification in the vicinity of big transient waves, while the speeds of longer waves are close to linear values. The relative long wave (storm wave) travelling with short waves (wind waves) dramatically change the local kurtosis and skewness and may have an important role for the generation of large transient wave and provide an opportunity for triggering the freak waves.

原文English
主出版物標題Proceedings of the 34th International Conference on Coastal Engineering, ICCE 2014
編輯Patrick Lynett
發行者American Society of Civil Engineers (ASCE)
ISBN(電子)9780989661126
出版狀態Published - 2014 一月 1
事件34th International Conference on Coastal Engineering, ICCE 2014 - Seoul, Korea, Republic of
持續時間: 2014 六月 152014 六月 20

出版系列

名字Proceedings of the Coastal Engineering Conference
2014-January
ISSN(列印)0161-3782

Other

Other34th International Conference on Coastal Engineering, ICCE 2014
國家Korea, Republic of
城市Seoul
期間14-06-1514-06-20

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Ocean Engineering
  • Oceanography

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  • 引用此

    Hsu, W. Y., Shugan, I., Chiang, W. S., Yang, R. Y., Hwung, H. H., Kuznetsov, S., & Saprykina, Y. (2014). An experimental study on nonlinear wave dynamics: Rouge wave generation and wave blocking. 於 P. Lynett (編輯), Proceedings of the 34th International Conference on Coastal Engineering, ICCE 2014 (Proceedings of the Coastal Engineering Conference; 卷 2014-January). American Society of Civil Engineers (ASCE).