Hydraulic stability of cube-armored mound breakwaters in depth-limited breaking wave conditions

Patricia  Mares-Nasarre; Jorge Molines; M. Esther Gómez-Martín; Josep R. Medina

doi:10.1016/j.oceaneng.2022.111845

Hydraulic stability of cube-armored mound breakwaters in depth-limited breaking wave conditions

Patricia Mares-Nasarre^*, Jorge Molines, M. Esther Gómez-Martín, Josep R. Medina

^*Corresponding author for this work

Hydraulic Structures and Flood Risk

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Abstract

Armor erosion due to wave attack has been studied intensively since it is considered the main failure mode of mound breakwaters. Cube-armored mound breakwaters in depth-limited breaking wave conditions are common in practice but have received limited attention in the literature. In this study, 2D physical tests were performed on non-overtopped double-layer randomly-placed cube-armored mound breakwater models with armor slope cotα = 1.5 and bottom slope m = 2% in breaking wave conditions. Using the experimental results, a new hydraulic stability formula was derived with a coefficient of determination R² = 0.85 based on a power relationship between the armor damage and the stability number and the dimensionless water depth. A lower hydraulic stability was found for the front slope of non-overtopped cube-armored structures in breaking wave conditions when compared to formulas given in the literature.

Original language	English
Article number	111845
Number of pages	13
Journal	Ocean Engineering
Volume	259
DOIs	https://doi.org/10.1016/j.oceaneng.2022.111845
Publication status	Published - 2022

Keywords

Armor damage
Breaking waves
Cube armor
Depth-limited breaking wave conditions
Hydraulic stability
Mound breakwater

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10.1016/j.oceaneng.2022.111845

1-s2.0-S002980182201188X-mainFinal published version, 6.39 MBLicence: CC BY

Cite this

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title = "Hydraulic stability of cube-armored mound breakwaters in depth-limited breaking wave conditions",

abstract = "Armor erosion due to wave attack has been studied intensively since it is considered the main failure mode of mound breakwaters. Cube-armored mound breakwaters in depth-limited breaking wave conditions are common in practice but have received limited attention in the literature. In this study, 2D physical tests were performed on non-overtopped double-layer randomly-placed cube-armored mound breakwater models with armor slope cotα = 1.5 and bottom slope m = 2% in breaking wave conditions. Using the experimental results, a new hydraulic stability formula was derived with a coefficient of determination R2 = 0.85 based on a power relationship between the armor damage and the stability number and the dimensionless water depth. A lower hydraulic stability was found for the front slope of non-overtopped cube-armored structures in breaking wave conditions when compared to formulas given in the literature.",

keywords = "Armor damage, Breaking waves, Cube armor, Depth-limited breaking wave conditions, Hydraulic stability, Mound breakwater",

author = "Patricia Mares-Nasarre and Jorge Molines and G{\'o}mez-Mart{\'i}n, {M. Esther} and Medina, {Josep R.}",

year = "2022",

doi = "10.1016/j.oceaneng.2022.111845",

language = "English",

volume = "259",

journal = "Ocean Engineering",

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T1 - Hydraulic stability of cube-armored mound breakwaters in depth-limited breaking wave conditions

AU - Mares-Nasarre, Patricia

AU - Molines, Jorge

AU - Gómez-Martín, M. Esther

AU - Medina, Josep R.

PY - 2022

Y1 - 2022

N2 - Armor erosion due to wave attack has been studied intensively since it is considered the main failure mode of mound breakwaters. Cube-armored mound breakwaters in depth-limited breaking wave conditions are common in practice but have received limited attention in the literature. In this study, 2D physical tests were performed on non-overtopped double-layer randomly-placed cube-armored mound breakwater models with armor slope cotα = 1.5 and bottom slope m = 2% in breaking wave conditions. Using the experimental results, a new hydraulic stability formula was derived with a coefficient of determination R2 = 0.85 based on a power relationship between the armor damage and the stability number and the dimensionless water depth. A lower hydraulic stability was found for the front slope of non-overtopped cube-armored structures in breaking wave conditions when compared to formulas given in the literature.

AB - Armor erosion due to wave attack has been studied intensively since it is considered the main failure mode of mound breakwaters. Cube-armored mound breakwaters in depth-limited breaking wave conditions are common in practice but have received limited attention in the literature. In this study, 2D physical tests were performed on non-overtopped double-layer randomly-placed cube-armored mound breakwater models with armor slope cotα = 1.5 and bottom slope m = 2% in breaking wave conditions. Using the experimental results, a new hydraulic stability formula was derived with a coefficient of determination R2 = 0.85 based on a power relationship between the armor damage and the stability number and the dimensionless water depth. A lower hydraulic stability was found for the front slope of non-overtopped cube-armored structures in breaking wave conditions when compared to formulas given in the literature.

KW - Armor damage

KW - Breaking waves

KW - Cube armor

KW - Depth-limited breaking wave conditions

KW - Hydraulic stability

KW - Mound breakwater

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VL - 259

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Hydraulic stability of cube-armored mound breakwaters in depth-limited breaking wave conditions

Abstract

Keywords

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