CALCULATION of IRREGULAR WAVE REFLECTION from PERFORATED-WALL CAISSON BREAKWATERS USING A REGULAR WAVE MODEL

Kyung Duck Suh, Sang Young Son, Jong In Lee, Tae Hwan Lee

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

12 Citations (Scopus)

Abstract

In this paper, we examine several methods for calculating the reflection of irregular waves from a perforated-wall caisson breakwater using a regular wave model. The first method is the traditional regular wave approximation, which approximates the irregular waves as a single regular wave whose height and period are the root-mean-squared wave height and significant wave period, respectively. The second is to use the regular wave model, repeatedly, for each frequency component of the irregular wave spectrum. The wave period is determined as the reciprocal of the frequency, and the root-mean-squared wave height is used for all the frequencies. The third method is the same as the second one, but the wave height corresponding to the energy of each component wave is used. Comparison with experimental data of previous authors shows the second method is the most adequate, giving reasonable agreement in both overall reflection coefficients and reflected wave spectra. The first method, which uses the most conventional approximation of irregular waves and has been widely used because of its simplicity, gives large errors even in the overall reflection coefficients, leaving aside the fact that it cannot resolve the frequency-dependent nature of wave reflection.

Original languageEnglish
Title of host publicationProceedings of the 28th International Conference on Coastal Engineering 2002
Subtitle of host publicationSolving Coastal Conundrums, ICCE 2002
EditorsJane McKee Smith
PublisherAmerican Society of Civil Engineers (ASCE)
Pages1709-1721
Number of pages13
ISBN (Electronic)9812382380, 9789812382382
DOIs
Publication statusPublished - 2003 Jan 1
Externally publishedYes
Event28th International Conference on Coastal Engineering, ICCE 2002 - Cardiff, Wales, United Kingdom
Duration: 2002 Jul 72002 Jul 12

Publication series

NameProceedings of the Coastal Engineering Conference
Volume2003-January
ISSN (Print)0161-3782

Conference

Conference28th International Conference on Coastal Engineering, ICCE 2002
CountryUnited Kingdom
CityCardiff, Wales
Period02/7/702/7/12

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Ocean Engineering
  • Oceanography

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    Suh, K. D., Son, S. Y., Lee, J. I., & Lee, T. H. (2003). CALCULATION of IRREGULAR WAVE REFLECTION from PERFORATED-WALL CAISSON BREAKWATERS USING A REGULAR WAVE MODEL. In J. M. Smith (Ed.), Proceedings of the 28th International Conference on Coastal Engineering 2002: Solving Coastal Conundrums, ICCE 2002 (pp. 1709-1721). (Proceedings of the Coastal Engineering Conference; Vol. 2003-January). American Society of Civil Engineers (ASCE). https://doi.org/10.1142/9789812791306_0144