Hydraulic simulators on real dikes and levees

The first part of this chapter gives a short description of wave processes on a dike, on what we know, including re-cent new knowledge. These wave processes are wave impacts, wave run-up and wave overtopping. The second part focuses on description of three Simulators, each of them simulating one of the wave processes and which have been and are being used to test the strength of grass covers on a dike under severe storm conditions. Sometimes they are also applied to measure wave impacts by overtopping wave volumes.