The failure probability of grass erosion due to wave overtopping: A case study of the Afsluitdijk, The Netherlands

Jord Jurriaan Warmink, Vera Maria van Bergeijk, Martijn Kriebel, Hizkia Trul, Coen Kuiper, Suzanne J.M.H. Hulscher

Research output: Contribution to conferencePaperAcademicpeer-review

Abstract

Wave overtopping is one of main failure mechanism of flood protective structures. Experiments and
numerical simulations have shown that transitions are weak spots for cover erosion. Transitions in geometry and in bed
roughness affect the cover erosion significantly by local deceleration and acceleration of the flow. This paper presents
a method to compute the critical average overtopping discharge for a complex dike geometry, including transition,
applied to the Afsluitdijk case study. The results show that although the critical overtopping discharge decreases with
increasing wave height, the sensitivity of the critical overtopping discharge for wave height decreases for higher waves.
This is shown for both the COM and the VE-TM models for all locations along the dike’s cross section. Although
further validation of both models is needed for a wider range of dike configurations, the results show that both models
are able to probabilistically assess grass erosion based on the critical overtopping discharge for complex dike
geometries, including transitions
Original languageEnglish
Number of pages6
Publication statusPublished - 2021
Event4th European Conference on Flood Risk Management, FLOODrisk 2020 - Budapest University of Technology and Economics (BME) ; Online event, Virtual Conference, Hungary
Duration: 21 Jun 202125 Jun 2021
Conference number: 4

Conference

Conference4th European Conference on Flood Risk Management, FLOODrisk 2020
Abbreviated titleFLOODrisk 2020
Country/TerritoryHungary
CityVirtual Conference
Period21/06/2125/06/21

Fingerprint

Dive into the research topics of 'The failure probability of grass erosion due to wave overtopping: A case study of the Afsluitdijk, The Netherlands'. Together they form a unique fingerprint.

Cite this