Details
| Original language | English |
|---|---|
| Article number | 1035 |
| Journal | Water (Switzerland) |
| Volume | 11 |
| Issue number | 5 |
| Early online date | 17 May 2019 |
| Publication status | Published - May 2019 |
Abstract
Wave 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.
Keywords
- Coastal structures, Design formulae, Laboratory tests, Stepped revetment, Wave overtopping
ASJC Scopus subject areas
- Environmental Science(all)
- Water Science and Technology
- Social Sciences(all)
- Geography, Planning and Development
- Agricultural and Biological Sciences(all)
- Aquatic Science
- Biochemistry, Genetics and Molecular Biology(all)
- Biochemistry
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In: Water (Switzerland), Vol. 11, No. 5, 1035, 05.2019.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Wave Overtopping of Stepped Revetments
AU - Kerpen, Nils B.
AU - Schoonees, Talia
AU - Schlurmann, Torsten
N1 - Funding Information: Funding: The publication of this article was funded by the Open Access fund of Leibniz Universität Hannover.
PY - 2019/5
Y1 - 2019/5
N2 - Wave 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.
AB - Wave 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.
KW - Coastal structures
KW - Design formulae
KW - Laboratory tests
KW - Stepped revetment
KW - Wave overtopping
KW - Revetments
KW - Shore protection
KW - Slope protection
KW - Coastal protection
KW - Critical assessment
KW - Laboratory test
KW - Non-breaking waves
KW - Reduction coefficient
KW - Wave overtoppings
KW - Water waves
KW - boundary condition
KW - breaking wave
KW - coastal protection
KW - coastal structure
KW - laboratory method
KW - overtopping
KW - roughness
KW - testing method
KW - Coastal structures
KW - Design formulae
KW - Laboratory tests
KW - Stepped revetment
KW - Wave overtopping
UR - http://www.scopus.com/inward/record.url?scp=85066330350&partnerID=8YFLogxK
U2 - 10.3390/w11051035
DO - 10.3390/w11051035
M3 - Article
VL - 11
JO - Water (Switzerland)
JF - Water (Switzerland)
SN - 2073-4441
IS - 5
M1 - 1035
ER -