Violent breaking-wave impacts. Part 4: A detailed analysis and comparison of field and 1:4 scale measurements on sloping and vertical walls including the influence of air and scale effects

Bullock, Geoffrey N.; Bredmose, Henrik

doi:10.1016/j.coastaleng.2024.104520

Coastal Engineering

2024

DOI: 10.1016/j.coastaleng.2024.104520

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Violent breaking-wave impacts. Part 4: A detailed analysis and comparison of field and 1:4 scale measurements on sloping and vertical walls including the influence of air and scale effects

Geoffrey N. Bullock,

Henrik Bredmose

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Cited by 3 publications

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Numerical investigation of freak wave slamming on a fixed deck structure

Wang,

Luo,

Karunarathna

et al. 2025

Coastal Engineering

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Numerical investigation of freak wave slamming on a fixed deck structure

Wang,

Luo,

Karunarathna

et al. 2025

Coastal Engineering

View full text Add to dashboard Cite

Experimental study on plunging breaking waves impacting a vertical cylinder with three different model scales

Tai,

Ma,

Dong

2024

Ocean Engineering

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Shore-Side Downfall Pressures Due to Waves Impacting a Vertical Seawall: An Experimental Study

Baines,

Cunningham,

Rogers

2024

JMSE

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As part of an investigation into downfall impacts from violent overtopping waves, experimental data are presented for the impact pressures and forces generated by regular and focused waves breaking onto a vertical wall and impacting a landward horizontal deck at a scale of 1:38. Particular attention is given to the wave-by-wave uprush and impact downfall events. By selecting regular and focused wave conditions that produce impacts, new trends are identified for violent downfall phenomena that could easily be underestimated in current practice. The characteristics of the downfall impacts are investigated and three different types of downfall impact are identified and discussed. Using a Wavelet Filter to denoise the signal from pressure probes without losing the peak impact pressures or introducing a phase shift, the distinctive features and dynamic behaviours of the white-water impacts are considered, and it is shown that downfall pressure magnitudes of 30–40 ρgH are regularly achieved. Dynamic impulse times of the events are also presented with higher-impact events generally relating to shorter impulse times, highlighting the dynamic character of these impacts. The largest downfall pressures are found to occur further from the vertical wall than previously measured. Importantly, the spray travelling furthest from the point of the initial wave impact on the vertical wall causes some of the largest downfall pressures on the deck. The paper concludes that, while the dataset is small, there are strong indications that the effects of these types of impacts are structurally significant and present a risk to infrastructure located landward of seawalls.

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Violent breaking-wave impacts. Part 4: A detailed analysis and comparison of field and 1:4 scale measurements on sloping and vertical walls including the influence of air and scale effects

Cited by 3 publications

References 24 publications

Numerical investigation of freak wave slamming on a fixed deck structure

Numerical investigation of freak wave slamming on a fixed deck structure

Experimental study on plunging breaking waves impacting a vertical cylinder with three different model scales

Shore-Side Downfall Pressures Due to Waves Impacting a Vertical Seawall: An Experimental Study

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