Towards efficient uncertainty quantification with high-resolution morphodynamic models: A multifidelity approach applied to channel sedimentation

Berends, Koen Daniël; Scheel, F.; Warmink, Jord Jurriaan; Boer, Wiebe de; Ranasinghe, Roshanka; Hulscher, Suzanne J.M.H.

doi:10.1016/j.coastaleng.2019.103520

Cited by 10 publications

(5 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Secondly, coarse grid CFD models (grid size of tens to hundreds of meters) with highly reduced complexity fluid flow equations or surrogate modelling techniques (e.g. Berends et al, 2019), can be used to provide morphological information on the approximate effects of nourishment schemes on the coastal profile or shoreline position over many years to a few decades. Regarding modelling of wind-driven sedimentation and erosion around buildings, many studies exist that model airflow around buildings (e.g.…”

Section: Matching Morphological Information Needs and Morphological Model Capabilitiesmentioning

confidence: 99%

Beach-dune modelling in support of Building with Nature for an integrated spatial design of urbanized sandy shores

Wijnberg

Poppema

Mulder

et al. 2021

RiUS

Self Cite

View full text Add to dashboard Cite

The long-term physical existence of sandy shores critically depends on a balanced sediment budget. From the principles of Building with Nature it follows that a sustainable protection of sandy shores should employ some form of shore nourishment. In the spatial design process of urbanized sandy shores, where multiple functions must be integrated, the knowledge and the prediction of sediment dynamics and beach-dune morphology thus play an essential role. This expertise typically resides with coastal scientists who have condensed their knowledge in various types of morphological models that serve different purposes and rely on different assumptions, thus have their specific strengths and limitations. This paper identifies morphological information needs for the integrated spatial design of urbanized sandy shores using BwN principles, outlines capabilities of different types of morphological models to support this and identifies current gaps between the two. A clear mismatch arises from the absence of buildings and accompanying human activities in current numerical models simulating morphological developments in beach-dune environments.

show abstract

Section: Matching Morphological Information Needs and Morphological Model Capabilitiesmentioning

confidence: 99%

Beach-dune modelling in support of Building with Nature for an integrated spatial design of urbanized sandy shores

Wijnberg

Poppema

Mulder

et al. 2021

RiUS

Self Cite

View full text Add to dashboard Cite

show abstract

“…Another type of surrogate modelling is using low-fidelity physically based surrogates that are simplified models of the original system (Razavi et al, 2012;Berends et al, 2019;Bomers et al, 2019). These low-fidelity models require less computational power than the original CFD model but still include the physical processes, although some processes are parameterised.…”

Section: Reducing Computational Costsmentioning

confidence: 99%

“…These low-fidelity models require less computational power than the original CFD model but still include the physical processes, although some processes are parameterised. For example, a CFD model with a fine grid can be used as a high-fidelity model and a coarser grid as a low-fidelity model (Berends et al, 2019). Another possibility is to use a model based on the 1D shallow water equations as a low-fidelity model.…”

Section: Reducing Computational Costsmentioning

confidence: 99%

Over the dike top: modelling the hydraulic load of overtopping waves including transitions for dike cover erosion

Bergeijk¹

View full text Add to dashboard Cite

Samenvatting 1 Introduction 2 An analytical model of wave overtopping flow velocities on dike crests and landward slopes 3 Modelling the wave overtopping flow over the crest and the landward slope of grass-covered flood defences. 4 The wave overtopping load on landward slopes of grasscovered flood defences: deriving practical formulations using a numerical model. 5 The effects of transitions in cover type and height on the wave overtopping load on grass-covered flood defences 6 The cross-dike failure probability by wave overtopping over grass-covered and damaged dikes 7 Discussion 8 Conclusions and recommendations List of References

show abstract

“…For understanding the mechanisms driving salt marsh development, process-based models are necessary. The computational time of these models can be decreased by using a multifidelity approach, where high-resolution model runs are used to train lowresolution models (Berends et al, 2019). This multifidelity approach can be used with the process-based models in the current study, assuming that the output of the low-fidelity model and detailed high-fidelity model are correlated.…”

Section: R6 -Increasing Efficiency Of Modelsmentioning

confidence: 99%

Biogeomorphology of salt marshes

Willemsen¹

View full text Add to dashboard Cite

show abstract

Towards efficient uncertainty quantification with high-resolution morphodynamic models: A multifidelity approach applied to channel sedimentation

Cited by 10 publications

References 52 publications

Beach-dune modelling in support of Building with Nature for an integrated spatial design of urbanized sandy shores

Beach-dune modelling in support of Building with Nature for an integrated spatial design of urbanized sandy shores

Over the dike top: modelling the hydraulic load of overtopping waves including transitions for dike cover erosion

Biogeomorphology of salt marshes

Contact Info

Product

Resources

About