Local overshoot and wind effects on wave overtopping at vertical coastal structures

IRREGULAR WAVE OVERTOPPING RATES

Coastal Engineering Proceedings ◽

10.9753/icce.v19.22 ◽

1984 ◽

Vol 1 (19) ◽

pp. 22 ◽

Cited By ~ 2

Author(s):

Scott L. Douglass

Keyword(s):

Shallow Water ◽

Shore Protection ◽

Coastal Structures ◽

Wave Overtopping ◽

Manual Method ◽

Irregular Wave ◽

Order Of Magnitude

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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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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Wave overtopping at coastal structures: prediction tools and related hazard analysis

Journal of Cleaner Production ◽

10.1016/j.jclepro.2006.07.050 ◽

2007 ◽

Vol 15 (16) ◽

pp. 1514-1521 ◽

Cited By ~ 9

Author(s):

J. Geeraerts ◽

P. Troch ◽

J. De Rouck ◽

H. Verhaeghe ◽

J.J. Bouma

Keyword(s):

Hazard Analysis ◽

Coastal Structures ◽

Wave Overtopping ◽

Prediction Tools

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ROUGHNESS FACTOR FOR MULTI-LAYER ARMOUR AS OVERTOPPING ESTIMATOR

Coastal Engineering Proceedings ◽

10.9753/icce.v36v.structures.25 ◽

2020 ◽

pp. 25

Author(s):

Leopoldo Franco ◽

Yuri Pepi ◽

Stefano de Finis ◽

Verdiana Iorio ◽

Giorgio Bellotti ◽

...

Keyword(s):

Structural Characteristics ◽

Storm Surges ◽

Random Wave ◽

Roughness Factor ◽

Coastal Structures ◽

Wave Overtopping ◽

Wave Flume ◽

Physical Model Tests ◽

Rubble Mound ◽

Rubble Mound Breakwaters

Nowadays one of the most challenging problem for engineers is to adapt existing coastal structures to climate changes. Wave overtopping is highly sensitive to the increasing extreme water depths due to higher storm surges coupled with sea level rise. One way to face these problems for rubble mound breakwaters is to add one or more layers to the existing armour. Prediction of wave overtopping of coastal structures is presently obtained from empirical formulae in EurOtop (2018). For the case of overtopping over multi-layer armour, no validated method exists, so prediction must be based upon assumptions and judgement, with related uncertainties. This study is focused on the effects of different types of armour, the number of layer and other structural characteristics on the roughness factor f. The main effects of porosity and roughness will be investigated. This paper analyzes the results of several new physical model tests of different rubble mound breakwaters reproduced at the new medium scale random wave flume of the Department of Engineering of Roma Tre University.Recorded Presentation from the vICCE (YouTube Link): https://youtu.be/8cOdqkqQ-9s

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PREDICTION OF WAVE OVERTOPPING ON COASTAL STRUCTURES BY USING EXTENDED BOUSSINESQ AND SPH MODELS

Coastal Engineering 2006 ◽

10.1142/9789812709554_0396 ◽

2007 ◽

Author(s):

E.-S. Lee ◽

D. Violeau ◽

M. Benoit ◽

R. Issa ◽

D. Laurence ◽

...

Keyword(s):

Coastal Structures ◽

Wave Overtopping

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Wave Overtopping over Coastal Structures with Oblique Wind and Swell Waves

Journal of Marine Science and Engineering ◽

10.3390/jmse6040149 ◽

2018 ◽

Vol 6 (4) ◽

pp. 149 ◽

Cited By ~ 2

Author(s):

Ivo van der Werf ◽

Marcel van Gent

Keyword(s):

Wind Waves ◽

Wave Loading ◽

Coastal Structures ◽

Wave Overtopping ◽

Oblique Wave ◽

Coastal Structure ◽

Test Programme ◽

Specific Direction ◽

Wave Basin

Most guidelines on wave overtopping over coastal structures are based on conditions with waves from one direction only. Here, wave basin tests with oblique wave attack are presented where waves from one direction are combined with waves from another direction. This is especially important for locations where wind waves approach a coastal structure under a specific direction while swell waves approach the coastal structure under another direction. The tested structure was a dike with a smooth and impermeable 1:4 slope. The test programme consisted of four types of wave loading: (1) Wind waves only: “sea” (approaching the structure with an angle of 45°), (2) Wind waves and swell waves from the same direction (45°), (3) Wind waves and swell waves, simultaneously from two different directions (45° and −45°, thus perpendicular to each other), and (4) Wind waves, simultaneously from two different directions (45° and −45°, thus perpendicular to each other). Existing guidelines on wave overtopping have been extended to predict wave overtopping discharges under the mentioned types of wave loading (oblique sea and swell conditions).

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