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

10 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

Fingerprint

Caissons
caisson
Breakwaters
breakwater
wave height
wave spectrum
wave reflection
method

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Ocean Engineering
  • Oceanography

Cite this

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

CALCULATION of IRREGULAR WAVE REFLECTION from PERFORATED-WALL CAISSON BREAKWATERS USING A REGULAR WAVE MODEL. / Suh, Kyung Duck; Son, Sang Young; Lee, Jong In; Lee, Tae Hwan.

Proceedings of the 28th International Conference on Coastal Engineering 2002: Solving Coastal Conundrums, ICCE 2002. ed. / Jane McKee Smith. American Society of Civil Engineers (ASCE), 2003. p. 1709-1721 (Proceedings of the Coastal Engineering Conference; Vol. 2003-January).

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

Suh, KD, Son, SY, Lee, JI & Lee, TH 2003, CALCULATION of IRREGULAR WAVE REFLECTION from PERFORATED-WALL CAISSON BREAKWATERS USING A REGULAR WAVE MODEL. in JM Smith (ed.), Proceedings of the 28th International Conference on Coastal Engineering 2002: Solving Coastal Conundrums, ICCE 2002. Proceedings of the Coastal Engineering Conference, vol. 2003-January, American Society of Civil Engineers (ASCE), pp. 1709-1721, 28th International Conference on Coastal Engineering, ICCE 2002, Cardiff, Wales, United Kingdom, 02/7/7. https://doi.org/10.1142/9789812791306_0144
Suh KD, Son SY, Lee JI, Lee TH. CALCULATION of IRREGULAR WAVE REFLECTION from PERFORATED-WALL CAISSON BREAKWATERS USING A REGULAR WAVE MODEL. In Smith JM, editor, Proceedings of the 28th International Conference on Coastal Engineering 2002: Solving Coastal Conundrums, ICCE 2002. American Society of Civil Engineers (ASCE). 2003. p. 1709-1721. (Proceedings of the Coastal Engineering Conference). https://doi.org/10.1142/9789812791306_0144
Suh, Kyung Duck ; Son, Sang Young ; Lee, Jong In ; Lee, Tae Hwan. / CALCULATION of IRREGULAR WAVE REFLECTION from PERFORATED-WALL CAISSON BREAKWATERS USING A REGULAR WAVE MODEL. Proceedings of the 28th International Conference on Coastal Engineering 2002: Solving Coastal Conundrums, ICCE 2002. editor / Jane McKee Smith. American Society of Civil Engineers (ASCE), 2003. pp. 1709-1721 (Proceedings of the Coastal Engineering Conference).
@inproceedings{13cb06402b57473a8b8807860f6f88ac,
title = "CALCULATION of IRREGULAR WAVE REFLECTION from PERFORATED-WALL CAISSON BREAKWATERS USING A REGULAR WAVE MODEL",
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.",
author = "Suh, {Kyung Duck} and Son, {Sang Young} and Lee, {Jong In} and Lee, {Tae Hwan}",
year = "2003",
month = "1",
day = "1",
doi = "10.1142/9789812791306_0144",
language = "English",
series = "Proceedings of the Coastal Engineering Conference",
publisher = "American Society of Civil Engineers (ASCE)",
pages = "1709--1721",
editor = "Smith, {Jane McKee}",
booktitle = "Proceedings of the 28th International Conference on Coastal Engineering 2002",

}

TY - GEN

T1 - CALCULATION of IRREGULAR WAVE REFLECTION from PERFORATED-WALL CAISSON BREAKWATERS USING A REGULAR WAVE MODEL

AU - Suh, Kyung Duck

AU - Son, Sang Young

AU - Lee, Jong In

AU - Lee, Tae Hwan

PY - 2003/1/1

Y1 - 2003/1/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84950118651&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84950118651&partnerID=8YFLogxK

U2 - 10.1142/9789812791306_0144

DO - 10.1142/9789812791306_0144

M3 - Conference contribution

T3 - Proceedings of the Coastal Engineering Conference

SP - 1709

EP - 1721

BT - Proceedings of the 28th International Conference on Coastal Engineering 2002

A2 - Smith, Jane McKee

PB - American Society of Civil Engineers (ASCE)

ER -