Damage Progression of Low-Crested Rubble Mound with Single Layer and Core

A damage progression model for armour and core stones is developed to predict the temporal and cross-shore variation of a low crested rubble mound erosion under irregular wave action. The numerical model predicts the damage of a low crested rubble mound with one armour layer and core. Experimental data in a wave flume are used to calibrate the cross-shore model. The protective effect of the armour layer on core stones decreased as the armour layer was damaged and its alongshore averaged thickness become thinner. This study elucidated the armour and core stone interactions.