Freak wave forces on a vertical cylinder

Y. Deng, J. Yang, Wenhua Zhao, X. Li, L. Xiao

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

© 2016. This study investigates the wave forces acting on a vertical truncated cylinder induced by freak waves. A series of freak wave trains were generated based on the New Year wave prototype in a wave flume. The inline forces and pitch moments on the fixed cylinder were measured and Morison predictions on them were also performed with different wave kinematic models. Compared with the Morison results, larger force peaks and shallower force troughs are observed in the measurements. Besides, the wave front steepness is found to have a closer relationship with the non-dimensional inline force than the conventional wave steepness. Wavelet transform-based analyses were also successfully performed to reveal the local characteristics of the incident waves, inline forces and transfer functions between them.
Original languageEnglish
Pages (from-to)9-18
JournalCoastal Engineering
Volume114
DOIs
Publication statusPublished - 2016

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Wavelet transforms
Transfer functions
Kinematics

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Deng, Y. ; Yang, J. ; Zhao, Wenhua ; Li, X. ; Xiao, L. / Freak wave forces on a vertical cylinder. In: Coastal Engineering. 2016 ; Vol. 114. pp. 9-18.
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Freak wave forces on a vertical cylinder. / Deng, Y.; Yang, J.; Zhao, Wenhua; Li, X.; Xiao, L.

In: Coastal Engineering, Vol. 114, 2016, p. 9-18.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Freak wave forces on a vertical cylinder

AU - Deng, Y.

AU - Yang, J.

AU - Zhao, Wenhua

AU - Li, X.

AU - Xiao, L.

PY - 2016

Y1 - 2016

N2 - © 2016. This study investigates the wave forces acting on a vertical truncated cylinder induced by freak waves. A series of freak wave trains were generated based on the New Year wave prototype in a wave flume. The inline forces and pitch moments on the fixed cylinder were measured and Morison predictions on them were also performed with different wave kinematic models. Compared with the Morison results, larger force peaks and shallower force troughs are observed in the measurements. Besides, the wave front steepness is found to have a closer relationship with the non-dimensional inline force than the conventional wave steepness. Wavelet transform-based analyses were also successfully performed to reveal the local characteristics of the incident waves, inline forces and transfer functions between them.

AB - © 2016. This study investigates the wave forces acting on a vertical truncated cylinder induced by freak waves. A series of freak wave trains were generated based on the New Year wave prototype in a wave flume. The inline forces and pitch moments on the fixed cylinder were measured and Morison predictions on them were also performed with different wave kinematic models. Compared with the Morison results, larger force peaks and shallower force troughs are observed in the measurements. Besides, the wave front steepness is found to have a closer relationship with the non-dimensional inline force than the conventional wave steepness. Wavelet transform-based analyses were also successfully performed to reveal the local characteristics of the incident waves, inline forces and transfer functions between them.

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DO - 10.1016/j.coastaleng.2016.03.007

M3 - Article

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JF - Coastal Engineering

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