Modelling of wave overtopping at dikes using openfoam

Weiqiu Chen, Jord Warmink, Marcel van Gent, Suzanne Hulscher

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The average overtopping discharge is an important parameter for the design of flood defences. Several empirical formulas are available forpredictingthe overtopping discharge at dikes. However, these empirical formulas often have their specific applicable conditions. To complement withthe empirical methods, a numerical model has been developed using the open source CFD package OpenFOAMto model the wave overtopping at dikes. Systematic calibration and validation of the numerical model areperformed. The influencesof the mesh, solver, turbulence model and roughness height on the modelled results of the average overtopping discharge havebeen investigated during the model calibration. The simulations show that the turbulence model increasesthe accuracy of the numerical model for predicting the average overtopping discharge under wave breakingconditions.The calibrated model is then validated by comparing the modelled average overtopping dischargeswith the measured ones from the physical model tests. Results show that the OpenFOAM model is capable of predicting the average overtopping discharge accurately at dikes that have a smooth straight waterside slope.
Original languageEnglish
Title of host publicationCoastal Engineering 2020
Number of pages10
Publication statusPublished - 2020
Event37th International Conference on Coastal Engineering, ICCE 2020 - Virtual Conference
Duration: 13 Sept 202018 Sept 2020
Conference number: 37

Publication series

NameInternational Conference Proceedings of Coastal Engineering
PublisherAmerican Society of Civil Engineers
ISSN (Print)0589-087X


Conference37th International Conference on Coastal Engineering, ICCE 2020
Abbreviated titleICCE 2020
CityVirtual Conference


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