Abstract
Accuracy of wave overtopping rate under irregular wave conditions computed with a two-dimensional numerical wave flume 'CADMAS-SURF' was verified by comparing with hydraulic model experimental results. Furthermore, numerical examinations to determine the most efficient countermeasure against wave overtopping around road revetment were carried out using the CADMAS-SURF changing the shape and crest height of revetments under irregular waves. As a result, it was revealed that the CADMAS-SURF can reproduce not only wave deformation but also wave overtopping rate around revetments with complicated configurations. A numerical wave flume such as the CADMAS-SURF was, moreover, found to be useful in comprehensively discussing the prevention of wave overtopping disaster.