Accuracy of Numerical Morphological Models based on Simplified Hydrodynamics

Abstract (2024)

Authors

H.J. Barneveld Wageningen University & Research, HKV Lijn in Water
E. Mosselman Rivers, Ports, Waterways and Dredging Engineering - CEG , Deltares
V. Chavarrías Deltares
A.J.F. Hoitink Wageningen University & Research
Research Group
Rivers, Ports, Waterways and Dredging Engineering (CEG) (TU Delft)
Copyright: © 2024 H.J. Barneveld, E. Mosselman, V. Chavarrías, A.J.F. Hoitink
Numerical modelling Morphology Stability Analysis
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Published Date

2024

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Hydraulic Engineering

Research Group

Rivers, Ports, Waterways and Dredging Engineering

Abstract

Sustainable river management often requires long-term morphological simulations. As the future is unknown, uncertainty needs to be accounted for, which may require probabilistic simulations covering a large parameter domain. Even for one-dimensional models, simulation times can be long. One of the acceleration strategies is simplification of models by neglecting terms in the governing hydrodynamic equations. Examples are the quasi-steady model and the diffusive wave model, both widely used by scientists and practitioners. We established under which conditions these simplified and often more efficient models are accurate.