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China Ocean Engineering

, Volume 32, Issue 5, pp 624–632 | Cite as

Experimental Study on Crescent Waves Diffracted by A Circular Cylinder

  • Kai Yan
  • Liang-duo ShenEmail author
  • Jin-wei Shang
  • Liang Ma
  • Zhi-li Zou
Article
  • 30 Downloads

Abstract

Crescent waves often observed on the sea surface are unusual wave pattern induced by the instability of Stokes wave. The paper presents the experimental results of the wave field around a circular cylinder generated by the diffraction of crescent wave in order to examine the difference of diffracted crescent waves from the commonly-used diffracted Stokes waves. The results show that with the existence of the cylinder, the crescent wave pattern can still get fully developed, and with the presence of this type of wave pattern, the symmetry breaking of the wave amplitude distribution occurs and there are extra wave components at the frequencies of 0.5ω0, 1.5ω0 and 2.5ω0 (ω0 is the frequency of Stokes waves) appearing in the wave amplitude spectrum.

Key words

Stokes wave amplitude spectrum cylinder symmetry breaking 

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Copyright information

© Chinese Ocean Engineering Society and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Kai Yan
    • 2
  • Liang-duo Shen
    • 1
    • 2
    Email author
  • Jin-wei Shang
    • 2
  • Liang Ma
    • 2
  • Zhi-li Zou
    • 2
  1. 1.School of Port and Transportation EngineeringZhejiang Ocean UniversityZhoushanChina
  2. 2.State Key Laboratory of Coastal and Offshore EngineeringDalian University of TechnologyDalianChina

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