Landward Transport of Spray Generated from a Wave Absorbing Sea Wall

Hashida, Misao; Matsunaga, Nobuhiro; Irie, Isao

doi:10.1061/9780784402429.080

Cited by 5 publications

(1 citation statement)

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“…The stability of breakwater armor stones is mainly evaluated using mathematical methods such as Hudson's equation [4] and van der Meer's formulae [5], which consider only waves. High waves are usually accompanied by strong winds, and strong runup, rundown, and overtopping occur on rubble-mound structures [6,7]. Hence, runup height is one of the most important physical factors in the design of coastal structures, such as breakwater height and revetments [8,9].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Effect of Wind on Armor Stone Stability

Kim,

Lim,

Yoon

2024

JMSE

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Wind is a significant factor influencing the stability of breakwater armor stones. However, few existing studies have considered the effects of wind on these structures. In this study, two-dimensional laboratory experiments were conducted to examine the effect of wind on the stability of breakwater armor stones. The stability factor (KD) of the armor stone, fluid velocity, runup, and rundown were observed under the action of waves and winds. A wind turbine was installed in front of the physical model of the breakwater to generate extreme wind conditions of 5.5 and 12 m/s. The results showed that KD decreased by 42.18% at 5.5 m/s and 57.82% at 12 m/s compared with that without wind. The maximum runup and rundown heights increased with wind velocity, following a Rayleigh distribution. The fluid velocity distribution conformed to a normal distribution, with the mean velocity directed offshore. Many studies have suggested that runup, rundown, and fluid velocity are the main factors affecting the stability of breakwater armor stones. The analysis revealed that wind affects these factors and lowers the stability coefficient. These wind-induced hydrodynamic changes suggest the need for a detailed hydrodynamic review of wind-wave conditions.

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