An analytical model of wave overtopping flow velocities on dike crests and landward slopes

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Abstract

An accurate description of the maximum flow velocity across flood-protective structures is necessary in order to determine the stability of the landward slope and the amount of cover erosion. In this paper, two new formulas are derived to describe the change in the maximum overtopping flow velocity along the dike crest and the adjacent landward slope. These formulas are coupled in an effort to accurately predict the velocities in wave overtopping events. This analytical model is validated using 244 data points from flume tests and 300 data points from field tests on river dikes in the Netherlands. The modelled flow velocity shows good agreement with the measured flow velocity, with a Nash-Sutcliffe efficiency factor varying from 0.49 to 0.87. Also, the derived formulas are compared with existing formulas for wave overtopping flow velocities and overall showed a better performance for a wide range of geometries and covers.

Original languageEnglish
Pages (from-to)28-38
Number of pages11
JournalCoastal engineering
Volume149
Early online date14 Mar 2019
DOIs
Publication statusPublished - Jul 2019

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Levees
Flow velocity
Analytical models
Erosion
Rivers
Geometry

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title = "An analytical model of wave overtopping flow velocities on dike crests and landward slopes",
abstract = "An accurate description of the maximum flow velocity across flood-protective structures is necessary in order to determine the stability of the landward slope and the amount of cover erosion. In this paper, two new formulas are derived to describe the change in the maximum overtopping flow velocity along the dike crest and the adjacent landward slope. These formulas are coupled in an effort to accurately predict the velocities in wave overtopping events. This analytical model is validated using 244 data points from flume tests and 300 data points from field tests on river dikes in the Netherlands. The modelled flow velocity shows good agreement with the measured flow velocity, with a Nash-Sutcliffe efficiency factor varying from 0.49 to 0.87. Also, the derived formulas are compared with existing formulas for wave overtopping flow velocities and overall showed a better performance for a wide range of geometries and covers.",
author = "{van Bergeijk}, {Vera Maria} and Warmink, {Jord Jurriaan} and {van Gent}, {Marcel R.A.} and Hulscher, {Suzanne J.M.H.}",
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month = "7",
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language = "English",
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pages = "28--38",
journal = "Coastal engineering",
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An analytical model of wave overtopping flow velocities on dike crests and landward slopes. / van Bergeijk, Vera Maria; Warmink, Jord Jurriaan; van Gent, Marcel R.A.; Hulscher, Suzanne J.M.H.

In: Coastal engineering, Vol. 149, 07.2019, p. 28-38.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - An analytical model of wave overtopping flow velocities on dike crests and landward slopes

AU - van Bergeijk, Vera Maria

AU - Warmink, Jord Jurriaan

AU - van Gent, Marcel R.A.

AU - Hulscher, Suzanne J.M.H.

PY - 2019/7

Y1 - 2019/7

N2 - An accurate description of the maximum flow velocity across flood-protective structures is necessary in order to determine the stability of the landward slope and the amount of cover erosion. In this paper, two new formulas are derived to describe the change in the maximum overtopping flow velocity along the dike crest and the adjacent landward slope. These formulas are coupled in an effort to accurately predict the velocities in wave overtopping events. This analytical model is validated using 244 data points from flume tests and 300 data points from field tests on river dikes in the Netherlands. The modelled flow velocity shows good agreement with the measured flow velocity, with a Nash-Sutcliffe efficiency factor varying from 0.49 to 0.87. Also, the derived formulas are compared with existing formulas for wave overtopping flow velocities and overall showed a better performance for a wide range of geometries and covers.

AB - An accurate description of the maximum flow velocity across flood-protective structures is necessary in order to determine the stability of the landward slope and the amount of cover erosion. In this paper, two new formulas are derived to describe the change in the maximum overtopping flow velocity along the dike crest and the adjacent landward slope. These formulas are coupled in an effort to accurately predict the velocities in wave overtopping events. This analytical model is validated using 244 data points from flume tests and 300 data points from field tests on river dikes in the Netherlands. The modelled flow velocity shows good agreement with the measured flow velocity, with a Nash-Sutcliffe efficiency factor varying from 0.49 to 0.87. Also, the derived formulas are compared with existing formulas for wave overtopping flow velocities and overall showed a better performance for a wide range of geometries and covers.

U2 - 10.1016/j.coastaleng.2019.03.001

DO - 10.1016/j.coastaleng.2019.03.001

M3 - Article

VL - 149

SP - 28

EP - 38

JO - Coastal engineering

JF - Coastal engineering

SN - 0378-3839

ER -