Application of laboratory dam break experiments to non-impulsive wave overtopping

IF 4.2 2区工程技术 Q1 ENGINEERING, CIVIL

Coastal Engineering Pub Date : 2024-12-31 DOI:10.1016/j.coastaleng.2024.104695

Joshua Bagg , Mark Battley , Colin Whittaker , Tom Shand

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引用次数: 0

Abstract

This study evaluates the novel application of a laboratory dam break flume to replicate non-impulsive wave overtopping of coastal structures, without geometric scaling. The bore generated by the dam break flume is characterised and compared with overtopped bore parameters from the literature. For a more detailed wave-by-wave comparison across a broad parameter space, XBeach non-hydrostatic was used to simulate non-impulsive waves overtopping smooth-sloped coastal structures. From the XBeach dataset of individual overtopped bores, empirical relationships were derived to predict maximum water depth, velocity and flow rate using bore volume, offshore wave parameters and coastal structure parameters. Compared to the XBeach dataset, the flume bores replicate the overtopped bore flow characteristics for gentle slopes

6 \leq cot (α) \leq 10

, with peak wave period

T_{p} > 4

s and at a distance from the crest edge

1 \leq x_{c} \leq 5

m. Considering wave overtopping hazards, the flume bore maximum water depth and maximum velocity can exceed thresholds for pedestrian stability.

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来源期刊

Coastal Engineering 工程技术-工程：大洋

CiteScore

9.20

自引率

13.60%

发文量

审稿时长

3.5 months

期刊介绍： Coastal Engineering is an international medium for coastal engineers and scientists. Combining practical applications with modern technological and scientific approaches, such as mathematical and numerical modelling, laboratory and field observations and experiments, it publishes fundamental studies as well as case studies on the following aspects of coastal, harbour and offshore engineering: waves, currents and sediment transport; coastal, estuarine and offshore morphology; technical and functional design of coastal and harbour structures; morphological and environmental impact of coastal, harbour and offshore structures.