3. ROLE OF LARGE-SCALE MODEL TESTING IN COASTAL ENGINEERING - SELECTED EXAMPLE STUDIES PERFORMED IN GWK HANNOVER

First, the pivotal role of hydraulic model testing and the synergetic effects with numerical modelling and field measurements are discussed. In order to underline the importance of large-scale model testing as a necessary tool to overcome scale effects, a brief overview of possible scale effects in coastal hydraulic modelling is then provided. Third, the experience made using the Large Wave Flume in Hannover, in service since 1983, is illustrated through selected examples on surf zone morphodynamics, rubble mound breakwaters, breaking wave forces in deepwater and effects of wave overtopping. Finally, some visions with respect to the future role of large-scale facilities are briefly outlined.