Backward erosion piping in numerical models
A literature review
E.M. van der Linde (TU Delft - Hydraulic Structures and Flood Risk, Deltares)
M. Wewer (Technische Universität Dresden)
Bryant A. Robbins (U.S. Army Corps of Engineers)
Oriol Colomés (TU Delft - Offshore Engineering)
S.N. Jonkman (TU Delft - Hydraulic Structures and Flood Risk)
J.P. Aguilar-López (TU Delft - Hydraulic Structures and Flood Risk)
More Info
expand_more
Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.
Abstract
Backward erosion piping is a failure mechanism of dikes. Numerical modelling is crucial for design and assessment against BEP. Over 30 models have been developed, each with a different purpose and approach. This paper provides a comprehensive overview of the available numerical BEP models, highlighting their limitations, capabilities, and associated challenges. It discusses the different assumptions and their implications on the representation of BEP. Key challenges in the numerical modelling of BEP are (1) the flow (regime) inside the pipe, which is often simplified, even though the impact of this is relatively unknown. (2) The type of erosion (primary or secondary) differs per model, and even within a given type of erosion, approaches vary. (3) Overcoming the difference in scale is a trade-off between the computational effort and simplification. (4) Furthermore, validation of the physics in BEP modelling is difficult due to a of lack micro-scale experimental data.
help_outline