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

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

Mares Nasarre, P. (TU Delft Hydraulic Structures and Flood Risk)
Molines, Jorge (Universitat Politécnica de Valencia)
Gómez-Martín, M. Esther (Universitat Politécnica de Valencia)
Medina, Josep R. (Universitat Politécnica de Valencia)

2022

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.

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

http://resolver.tudelft.nl/uuid:b31f4334-18c0-4f7c-9752-bf25303aae00

https://doi.org/10.1016/j.oceaneng.2022.111845

0029-8018

Ocean Engineering, 259

Institutional Repository

journal article

© 2022 P. Mares Nasarre, Jorge Molines, M. Esther Gómez-Martín, Josep R. Medina