Wave Overtopping of Stepped Revetments
AbstractWave overtopping—i.e., excess of water over the crest of a coastal protection infrastructure due to wave run-up—of a smooth slope can be reduced by introducing slope roughness. A stepped revetment ideally constitutes a slope with uniform roughness and can reduce overtopping volumes of breaking waves up to 60% compared to a smooth slope. The effectiveness of the overtopping reduction decreases with increasing Iribarren number. However, to date a unique approach applicable for a wide range of boundary conditions is still missing. The present paper: (i) critically reviews and analyzes previous findings; (ii) contributes new results from extensive model tests addressing present knowledge gaps; and (iii) proposes a novel empirical formulation for robust prediction of wave overtopping of stepped revetments for breaking and non-breaking waves. The developed approach contrasts a critical assessment based on parameter ranges disclosed beforehand between a smooth slope on the one hand and a plain vertical wall on the other. The derived roughness reduction coefficient is developed and adjusted for a direct incorporation into the present design guidelines. Underlying uncertainties due to scatter of the results are addressed and quantified. Scale effects are highlighted. View Full-Text
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Kerpen, N.B.; Schoonees, T.; Schlurmann, T. Wave Overtopping of Stepped Revetments. Water 2019, 11, 1035.
Kerpen NB, Schoonees T, Schlurmann T. Wave Overtopping of Stepped Revetments. Water. 2019; 11(5):1035.Chicago/Turabian Style
Kerpen, Nils B.; Schoonees, Talia; Schlurmann, Torsten. 2019. "Wave Overtopping of Stepped Revetments." Water 11, no. 5: 1035.
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