The influence of a berm and roughness on the wave overtopping at dikes

W. Chen; M. R.A. van Gent; J. J. Warmink; S. J.M.H. Hulscher

doi:10.1016/j.coastaleng.2019.103613

The influence of a berm and roughness on the wave overtopping at dikes

W. Chen^*, M. R.A. van Gent, J. J. Warmink, S. J.M.H. Hulscher

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

Abstract

A reliable estimation of average wave overtopping discharge is important for dike design and safety assessment. Berms and roughness elements are widely applied to reduce the overtopping discharge over dikes. In this study, the effects of a berm and roughness on the wave overtopping discharge are investigated by means of physical model tests. New empirical formulae are derived from the analysis of the experimental data in order to provide more accurate estimations of reductive influence of berms and roughness on the wave overtopping discharge. Additionally, a new formula is developed to estimate the reductive influence of varying roughness along the waterside slopes with a berm. The new equations show a significantly better performance within the tested range when compared with existing formulae for the average overtopping discharge.

Original language	English
Article number	103613
Number of pages	15
Journal	Coastal Engineering
Volume	156
DOIs	https://doi.org/10.1016/j.coastaleng.2019.103613
Publication status	Published - 2020
Externally published	Yes

Keywords

Berm
Block revetment
Laboratory experiments
Overtopping discharge
Varying roughness

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10.1016/j.coastaleng.2019.103613

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title = "The influence of a berm and roughness on the wave overtopping at dikes",

abstract = "A reliable estimation of average wave overtopping discharge is important for dike design and safety assessment. Berms and roughness elements are widely applied to reduce the overtopping discharge over dikes. In this study, the effects of a berm and roughness on the wave overtopping discharge are investigated by means of physical model tests. New empirical formulae are derived from the analysis of the experimental data in order to provide more accurate estimations of reductive influence of berms and roughness on the wave overtopping discharge. Additionally, a new formula is developed to estimate the reductive influence of varying roughness along the waterside slopes with a berm. The new equations show a significantly better performance within the tested range when compared with existing formulae for the average overtopping discharge.",

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T1 - The influence of a berm and roughness on the wave overtopping at dikes

AU - Chen, W.

AU - van Gent, M. R.A.

AU - Warmink, J. J.

AU - Hulscher, S. J.M.H.

PY - 2020

Y1 - 2020

N2 - A reliable estimation of average wave overtopping discharge is important for dike design and safety assessment. Berms and roughness elements are widely applied to reduce the overtopping discharge over dikes. In this study, the effects of a berm and roughness on the wave overtopping discharge are investigated by means of physical model tests. New empirical formulae are derived from the analysis of the experimental data in order to provide more accurate estimations of reductive influence of berms and roughness on the wave overtopping discharge. Additionally, a new formula is developed to estimate the reductive influence of varying roughness along the waterside slopes with a berm. The new equations show a significantly better performance within the tested range when compared with existing formulae for the average overtopping discharge.

AB - A reliable estimation of average wave overtopping discharge is important for dike design and safety assessment. Berms and roughness elements are widely applied to reduce the overtopping discharge over dikes. In this study, the effects of a berm and roughness on the wave overtopping discharge are investigated by means of physical model tests. New empirical formulae are derived from the analysis of the experimental data in order to provide more accurate estimations of reductive influence of berms and roughness on the wave overtopping discharge. Additionally, a new formula is developed to estimate the reductive influence of varying roughness along the waterside slopes with a berm. The new equations show a significantly better performance within the tested range when compared with existing formulae for the average overtopping discharge.

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KW - Block revetment

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KW - Varying roughness

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VL - 156

JO - Coastal Engineering

JF - Coastal Engineering

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The influence of a berm and roughness on the wave overtopping at dikes

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Keywords

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