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

Vera Maria van Bergeijk; Jord Jurriaan Warmink; Marcel R.A. van Gent; Suzanne J.M.H. Hulscher

doi:10.1016/j.coastaleng.2019.03.001

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

Vera Maria van Bergeijk, Jord Jurriaan Warmink, Marcel R.A. van Gent, Suzanne J.M.H. Hulscher

Marine and Fluvial Systems

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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 language	English
Pages (from-to)	28-38
Number of pages	11
Journal	Coastal engineering
Volume	149
Early online date	14 Mar 2019
DOIs	https://doi.org/10.1016/j.coastaleng.2019.03.001
Publication status	Published - Jul 2019

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10.1016/j.coastaleng.2019.03.001

analyticalAccepted author version, 1.65 MBLicence: CC BY-NC-ND
analyticalFinal published version, 2.1 MBLicence: Taverne

PhD Work Vera van Bergeijk
van Bergeijk, V. M. (Creator), Warmink, J. J. (Supervisor) & Hulscher, S. J. M. H. (Supervisor), Areda (University of Twente), 17 Feb 2022
https://areda.utsp.utwente.nl:9000/minio/et-mfs/PhDWorkVanBergeijk_20220211_OvertoppingFlow.zip
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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.}",

year = "2019",

month = jul,

doi = "10.1016/j.coastaleng.2019.03.001",

language = "English",

volume = "149",

pages = "28--38",

journal = "Coastal engineering",

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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

SN - 0378-3839

VL - 149

SP - 28

EP - 38

JO - Coastal engineering

JF - Coastal engineering

ER -

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

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PhD Work Vera van Bergeijk

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