Transformation of irregular waves propagating over a submerged breakwater

Cheng Hsien Lee, Mao Lin Shen, Ching-Jer Huang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The unsteady, 2-d Navier-Stokes equations and the exact free surface boundary conditions were solved numerically to investigate the transformation of irregular waves propagating over a submerged breakwater. The deterministic spectral amplitude method performed by fast Fourier transform algorithm was applied to generate the incident irregular waves with the Goda-JONSWAP spectrum. Transformation of waves was discussed in terms of reflected energy and wave spectra. By providing the incident irregular waves with repeatable amplitude and phase for each wave component, effects of the height and width of the breakwater on the wave transformation were studied systematically. The numerical results show that propagation of irregular waves over a submerged breakwater produces not only the higher harmonics of the fundamentals waves, but also the subharmonic and superharmonic waves, due to the nonlinear interaction of different wave components in shallow water.

Original languageEnglish
Title of host publicationProceedings of The Seventeenth 2007 International Offshore and Polar Engineering Conference, ISOPE 2007
Pages2569-2574
Number of pages6
Publication statusPublished - 2007 Dec 3
Event17th 2007 International Offshore and Polar Engineering Conference, ISOPE 2007 - Lisbon, Portugal
Duration: 2007 Jul 12007 Jul 6

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Other

Other17th 2007 International Offshore and Polar Engineering Conference, ISOPE 2007
CountryPortugal
CityLisbon
Period07-07-0107-07-06

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

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