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

    Cite this

    @article{58abc7a2274f4a778f784c70f031cf5d,
    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 = "7",
    doi = "10.1016/j.coastaleng.2019.03.001",
    language = "English",
    volume = "149",
    pages = "28--38",
    journal = "Coastal engineering",
    issn = "0378-3839",
    publisher = "Elsevier",

    }

    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

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    SP - 28

    EP - 38

    JO - Coastal engineering

    JF - Coastal engineering

    SN - 0378-3839

    ER -