EVOLUTION OF DAMAGED ARMOR LAYER PROFILE
No. 32 (2010), Coastal Structures
No. 32 (2010)

EVOLUTION OF DAMAGED ARMOR LAYER PROFILE

Coastal Structures
https://doi.org/10.9753/icce.v32.structures.40
Published 2011-01-17
Ali Farhadzadeh
University of Delaware
Nobuhisa Kobayashi
University of Delaware
Jeffrey Melby
US Army Engineer Research and Development Center
Proceedings of the 32nd International Conference
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Keywords

rubble-mound breakwater
damage progression
coastal structure
wave-structure interaction
armor layer

How to Cite

Farhadzadeh, A., Kobayashi, N., & Melby, J. (2011). EVOLUTION OF DAMAGED ARMOR LAYER PROFILE. Coastal Engineering Proceedings, 1(32), structures.40. https://doi.org/10.9753/icce.v32.structures.40
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Abstract

A probabilistic hydrodynamic model for the wet and dry zone on a permeable structure is developed to predict irregular wave action on the structure above the still water level. The model is based on the time-averaged continuity and momentum equations for nonlinear shallow-water waves coupled with the exponential probability distribution of the water depth. The model predicts the cross-shore variations of the mean and standard deviation of the water depth and horizontal velocity. Damage progression of a stone armor layer is predicted by modifying a formula for bed load on beaches with input from the hydrodynamic model. The damage progression model is compared with three tests by Melby and Kobayashi (1998) that lasted up to 28.5 hours. The model predicts the temporal progression of the eroded area quite well. The numerical model is very efficient and suited for a risk-based design of rubble mound structures.
https://doi.org/10.9753/icce.v32.structures.40
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References

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