IRREGULAR WAVE OVERTOPPING RATES

Methods for estimating wave overtopping of coastal structures are reviewed and compared with the very limited available data and with each other. The different methods yield results which can vary more than an order-of-magnitude. For vertical seawalls, the U. S. Army Engineer Shore Protection Manual method estimates more overtopping than Goda's method except in very shallow water. For sloped structures, the Shore Protection Manual method usually estimates less overtopping than Battjes' method and Owen's method. However, data for adequately evaluating how well these methods predict overtopping has not been published.

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Numerical simulation of wave overtopping of coastal structures using the non-linear shallow water equations

Coastal Engineering ◽

10.1016/s0378-3839(00)00040-5 ◽

2000 ◽

Vol 41 (4) ◽

pp. 433-465 ◽

Cited By ~ 144

Author(s):

K. Hu ◽

C.G. Mingham ◽

D.M. Causon

Keyword(s):

Numerical Simulation ◽

Shallow Water ◽

Shallow Water Equations ◽

Coastal Structures ◽

Wave Overtopping ◽

Non Linear

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Wave Force Characteristics of Large-Sized Offshore Wind Support Structures to Sea Levels and Wave Conditions

Applied Sciences ◽

10.3390/app9091855 ◽

2019 ◽

Vol 9 (9) ◽

pp. 1855

Author(s):

Youn-Ju Jeong ◽

Min-Su Park ◽

Jeongsoo Kim ◽

Sung-Hoon Song

Keyword(s):

Shallow Water ◽

Wave Height ◽

Wave Force ◽

Diffraction Effect ◽

Support Structures ◽

Sea Levels ◽

Irregular Wave ◽

Long Period ◽

Short Period ◽

Period Wave

This paper presents the results of wave force tests conducted on three types of offshore support structures considering eight waves and three sea levels to investigate the corresponding wave forces. As a result of this study, it is found that the occurrence of shoaling in shallow water induces a significant increase of the wave force. Most of the test models at the shallow water undergo a nonlinear increase of the wave force with higher wave height increasing. In addition, the larger the diameter of the support structure within the range of this study, the larger the diffraction effect is, and the increase in wave force due to shoaling is suppressed. Under an irregular wave at the shallow water, the wave force to the long-period wave tends to be slightly higher than that of the short period wave since the higher wave height component included in the irregular wave has an influence on the shoaling. In addition, it is found that the influence of shoaling under irregular wave becomes more apparent in the long period.

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ESTIMATION OF WATER PARTICLE VELOCITIES OF SHALLOW WATER WAVES BY A MODIFIED TRANSFER FUNCTION METHOD

Coastal Engineering Proceedings ◽

10.9753/icce.v20.33 ◽

1986 ◽

Vol 1 (20) ◽

pp. 33 ◽

Cited By ~ 2

Author(s):

Hirofumi Koyama ◽

Koichiro Iwata

Keyword(s):

Transfer Function ◽

Shallow Water ◽

Approximate Method ◽

Stream Function ◽

Water Waves ◽

Function Method ◽

Finite Amplitude ◽

Water Particle ◽

Irregular Wave ◽

Particle Velocities

This paper Is intended to propose a simple, yet highly reliable approximate method which uses a modified transfer function in order to evaluate the water particle velocity of finite amplitude waves at shallow water depth in regular and irregular wave environments. Using Dean's stream function theory, the linear function is modified so as to include the nonlinear effect of finite amplitude wave. The approximate method proposed here employs the modified transfer function. Laboratory experiments have been carried out to examine the validity of the proposed method. The approximate method is shown to estimate well the experimental values, as accurately as Dean's stream function method, although its calculation procedure is much simpler than that of Dean's method.

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STUDY ON BASIC CHARACTERISTICS OF NON-WAVE-OVERTOPPING TYPE SEAWALL IN SHALLOW WATER

PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN ◽

10.2208/prooe.15.25 ◽

1999 ◽

Vol 15 ◽

pp. 25-30

Author(s):

Yuji KAMIKUBO ◽

Isao IRIE ◽

Keisuke MURAKAMI ◽

Kazunori KANDA ◽

Yasuto KATAOKA ◽

...

Keyword(s):

Shallow Water ◽

Wave Overtopping ◽

Basic Characteristics

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ABOUT SOME UNCERTAINTIES IN THE PHYSICAL AND NUMERICAL MODELING OF WAVE OVERTOPPING OVER COASTAL STRUCTURES

Coastal Engineering Proceedings ◽

10.9753/icce.v34.structures.71 ◽

2014 ◽

Vol 1 (34) ◽

pp. 71 ◽

Cited By ~ 1

Author(s):

Alessandro Romano ◽

Hannah Elisabeth Williams ◽

Giorgio Bellotti ◽

Riccardo Briganti ◽

Nicholas Dodd ◽

...

Keyword(s):

Numerical Modeling ◽

Coastal Structures ◽

Wave Overtopping

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VERTICAL SEA WALL CREST MODIFICATIONS FOR OVERTOPPING

Coastal Engineering Proceedings ◽

10.9753/icce.v36.structures.71 ◽

2018 ◽

pp. 71

Author(s):

Dogan Kisacik ◽

Gulizar Ozyurt Tarakcioglu ◽

Cuneyt Baykal ◽

Gokhan Kaboglu

Keyword(s):

Urban Areas ◽

Vertical Wall ◽

Breaking Wave ◽

Limited Information ◽

Coastal Structures ◽

Wave Overtopping ◽

Wave Basin ◽

First Results ◽

Set Up ◽

Sea Wall

Crest modifications such as a storm wall, parapet or a bullnose are widely used to reduce the wave overtopping over coastal structures where spatial and visual demands restrict the crest heights, especially in urban areas. Although reduction factors of these modifications have been studied for sloped structures in EurOtop Manual (2016), there is limited information regarding the vertical structures. This paper presents the experimental set-up and first results of wave overtopping tests for a vertical wall with several different super structure types: a) seaward storm wall, b) sloping promenade, c) landward storm wall, d) stilling wave basin (SWB), e) seaward storm wall with parapet, f) landward storm wall on the horizontal promenade with parapet, g) landward storm wall with parapet, h) stilling wave basin (SWB) with parapet, under breaking wave conditions. The SWB is made up of a seaward storm wall (may be a double shifted rows) , a sloping promenade (basin) and a landward storm wall. The seaward storm wall is partially permeable to allow the evacuation of the water in the basin.

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