Energy dissipation within the wave run-up at stepped revetments
- 72 Downloads
To understand the processes and energy dissipation performance caused by turbulence during the wave run-up over a stepped revetment, hydraulic model tests with steady flow conditions are conducted and correlated with unsteady flow conditions of the wave run-up within a short time frame. Under irregular waves, the run-up reduction over a stepped revetment is dependent on the Iribarren number and decreases for decreasing Iribarren numbers. Velocity gradients are found to be similar in a steady and unsteady flow regime near the pseudo-bottom.
Key wordsrun-up stepped revetment roughness energy dissipation
Unable to display preview. Download preview PDF.
The present work is part of the joint research project ‘waveSTEPS’ funded by the German Federal Ministry of Education and Research (BMBF) through the German Coastal Engineering Research council (KFKI, 03KIS108 and 03KIS119). The authors gratefully acknowledge the support of the experimental work by Kornelius Müller within the wave flume experiments and Jochen Vogel within the current flume experiments.
- Bung, D. B., 2011. Non-intrusive measuring of air-water flow properties in self-aerated stepped spillway flow. 34th IAHR World Congress. Brisbane, 2380–2387.Google Scholar
- Bung, D. B., and Valero, D., 2015. Image processing for Bubble Image Velocimetry in self-aerated flows. 36th IAHR World Congress. Den Haag, 6594–6601.Google Scholar
- Bung, D. B., and Valero, D., 2016. Image processing techniques for velocity estimation in highly aerated flows: Bubble Image Velocimetry vs. Optical Flow. 4th IAHR Europe Congress. Liege. 151–157.Google Scholar
- EurOtop, 2007. European Overtopping Manual. Die Küste, vol. 73. Boyens Mediean GmbH & Co. KG., Heide i. Holstein, 171pp.Google Scholar
- Jachowski, R., 1964. Interlocking precast concrete block sea wall. Proceedings of the 9th Conference on Coastal Engineering, Lisbon, Portugal, 504–517.Google Scholar
- Kerpen, N. B., and Schlurmann, T., 2014. Experimental investigation on wave overtopping on stepped embankments. Proceedings of the 5th International Conference on Application of Physical Modelling to Port and Coastal Protection, Varna, Bulgaria, Vol. 1: 262–269.Google Scholar
- Kerpen, N. B., and Schlurmann, T., 2016. Stepped revetmentsrevisited. Proceedings of the 6th International Conference on Application of Physical Modelling in Coastal and Port Engineering and Science, Ottawa, Canada, 1–10.Google Scholar
- McCartney, B., 1976. Survey of coastal revetment types. Miscellaneous Report No. 76-7, Coastal Engineering Research Center, 1–49.Google Scholar
- Nussbaum, P., and Colley, B., 1971. Dam construction and facing with soil cement. Bulletin RD 010.01W, Portland cement association, 111pp.Google Scholar
- Saville, T., 1957. Wave run-up on composite slopes. Proceedings of the 6th Conference on Coastal Engineering, Miami Beach, 691–699.Google Scholar
- Schüttrumpf, H. F., 2001. Wellenüberlaufströmung bei Seedeichen: Experimentelle und theoretische Untersuchungen. In: Mitteilungen aus dem Leichtweiß Institut für Wasserbau. Vol. 149, Braunschweig. 127pp.Google Scholar
- Thielicke, W., and Stamhuis, E. J., 2014. PIVlab–Towards userfriendly, affordable and accurate digital Particle Image Velocimetry in MATLAB. Journal of Open Research Software, 2 (1): e30.Google Scholar
- van der Meer, J., and Janssen, J., 1995. Wave run-up and wave overtopping at dikes. Wave Forces on Inclined and Vertical Structures, ASCE, 1–27.Google Scholar
- Wassing, F., 1957. Model investigations on wave run-up carried out in the Netherlands during the past twenty years. Proceedings of the 6th International Conference on Coastal Engineering, Gainesville, Florida, 700–714.Google Scholar