Abstract
Transitions in the dike revetment or in the grass cover can significantly affect the wave overtopping discharge and the dike cover erosion. At the University of Twente, two PhD students recently started on the challenge of quantifying the effect of (1) waterside transition on the wave overtopping discharge and (2) transitions in grass covered dikes on dike erosion. In this paper we present their preliminary results and outline their future plans. Firstly, new laboratory experiments show that the existing wave overtopping formulas are not able to accurately predict the overtopping discharge in case of transitions on the waterside slope. Secondly, the analytical dike cover erosion model shows that transitions in grass covers significantly affect the location of maximum flow velocity and potential dike cover erosion. In future work, detailed numerical models will be developed for both the waterside slope and the landward slope to further increase our understanding of the effects of transitions on the wave overtopping discharge and the dike cover erosion.
| Original language | English |
|---|---|
| Number of pages | 7 |
| Journal | Proceedings of the Coastal Engineering Conference |
| Volume | 36 |
| Issue number | 2018 |
| DOIs | |
| Publication status | Published - 2018 |
| Externally published | Yes |
| Event | 36th International Conference on Coastal Engineering, ICCE 2018: The Present State of the Art and Science of Coastal Engineering - Baltimore Mariott Waterfront Hotel, 700 Aliceanna Street, Baltimore, MD 21202, Baltimore, United States Duration: 30 Jul 2018 → 3 Aug 2018 Conference number: 36 https://www.icce2018.com/ |
Keywords
- Erosion
- Flood defense reliability
- Grass cover erosion
- Revetments
- Transitions
- Wave overtopping