Overtopping plumes from wave impact is relevant to coastal defence for overtopping analysis of sea walls, levees, and gates. Improved insight into this phenomenon will further enhance the prediction of wave overtopping and its induced hazard, e.g., erosion, saltwater ingress, and a hindrance to traffic. A series of small-scale experiments have been carried out in the WaterLab at TU Delft to characterize the droplets formed by wave impacts. Focused waves were generated by the piston-type wavemaker to control the wave breaking point on the wall, which allowed the creation of different types of wave impact. Impacts were investigated respectively: non-breaking, flip-through, and air pocket. After the wave impact, all the stages of the plume formation were filmed using a high-speed camera at a frame rate of 500fps. In this study, the spray sheet breakup and droplet formation are investigated. A simple approach to estimate the maximum spray height is proposed, which can be used for the splash type overtopping in the future.
|Title of host publication
|Procedings ICE Breakwaters conference 25-27 April 2023
|Institution of Civil Engineers
|Number of pages
|Published - 2023
|ICE Breakwaters 2023: Coasts, Marine Structures and Breakwaters - Portsmouth Marriott Hotel, PO6 4SH, Portsmouth, United Kingdom
Duration: 25 Apr 2023 → 27 Apr 2023
|ICE Breakwaters 2023
|25/04/23 → 27/04/23
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