Print Email Facebook Twitter Wave overtopping discharges at rubble mound breakwaters including effects of a crest wall and a berm Title Wave overtopping discharges at rubble mound breakwaters including effects of a crest wall and a berm Author van Gent, M.R.A. (TU Delft Coastal Engineering; Deltares) Wolters, Guido (Deltares) Capel, Alex (Deltares) Date 2022 Abstract Physical model tests have been performed to study wave overtopping at rubble mound breakwaters, including breakwaters with a crest wall, breakwaters with a berm, and breakwaters with a crest wall and a berm. For rubble mound structures with a protruding crest wall or with a stable berm, limited information is available in literature even though protruding crest walls and berms clearly affect wave overtopping discharges. Adding a crest wall to an existing structure, increasing the height of a crest wall, adding a berm, or increasing the width or height of a berm, can be effective measures to account for effects of sea level rise if the sea level rise appears to be more severe than the amount of sea level rise for which the structure was designed for. The present wave flume tests were used to develop guidelines for rubble mound breakwaters, including breakwaters with a crest wall or with a berm. The relative height of the protruding part of a crest wall dominates the effect of a crest wall. The berm width, berm level and wave steepness all affect the influence of a berm on the wave overtopping discharge. Moreover, it was confirmed that the wave steepness also affects wave overtopping discharges for rubble mound breakwaters without a berm or without a crest wall. The developed set of expressions for rubble mound structures has also been validated based on existing data for oblique wave attack on rubble mound breakwaters with a crest wall. Subject BermCoastal structuresCrest wallDesign guidelinesOblique wavesPhysical model testsRoughnessRubble mound breakwatersWave overtopping To reference this document use: http://resolver.tudelft.nl/uuid:8dbc539e-d708-424a-8eab-526724b291f9 DOI https://doi.org/10.1016/j.coastaleng.2022.104151 ISSN 0378-3839 Source Coastal Engineering, 176 Part of collection Institutional Repository Document type journal article Rights © 2022 M.R.A. van Gent, Guido Wolters, Alex Capel Files PDF 1_s2.0_S0378383922000667_main.pdf 8.53 MB Close viewer /islandora/object/uuid:8dbc539e-d708-424a-8eab-526724b291f9/datastream/OBJ/view