Abstract
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.
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Acknowledgements
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.
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Kerpen, N.B., Bung, D.B., Valero, D. et al. Energy dissipation within the wave run-up at stepped revetments. J. Ocean Univ. China 16, 649–654 (2017). https://doi.org/10.1007/s11802-017-3355-z
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DOI: https://doi.org/10.1007/s11802-017-3355-z