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Erschienen in:
A 14-Year Multi-sites and High-Frequency Monitoring of Salinity in the Tidal Garonne River (S-W France) Reveals Marked Inter-annual Variability in Marine Intrusion Kapitel lesen Erstes Kapitel lesen

2020 | OriginalPaper | Buchkapitel

A Semi-coupled Projection Model for the Morphodynamics of Fast Evolving Flows Based on an Unstructured Finite-Volume Method

verfasst von : Miguel Uh Zapata, Kim Dan Nguyen

Erschienen in: Estuaries and Coastal Zones in Times of Global Change

Verlag: Springer Singapore

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Abstract

The aim of this work is to present a numerical method for fast evolving flows governed by the two-dimensional shallow water equations semi-coupled with the Exner sediment balance equation for bed evolutions. The method is based on Chorin’s projection, which combines the momentum and continuity equations in order to establish a Poisson-type equation for the water surface level including the bed evolution. The equations are discretized using an unstructured finite-volume technique. In the model, a second-order upwind scheme combined with a Local Extremum Diminishing method is developed to handle convection terms. A comparison with quasi-analytical and existing numerical results are done to test the performance of the used scheme, including the modeling of a dam-break on a mobile bed.

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Vorheriges Kapitel Numerical Study of Sediment Transport in the Seine Estuary: Contribution of Dredging
Nächstes Kapitel Mathematical Model Research of the Siltation Downstream Estuary Floodgate Under the Effect of Float Mud
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Metadaten
Titel
A Semi-coupled Projection Model for the Morphodynamics of Fast Evolving Flows Based on an Unstructured Finite-Volume Method
verfasst von
Miguel Uh Zapata
Kim Dan Nguyen
Copyright-Jahr
2020
Verlag
Springer Singapore
Buch
Estuaries and Coastal Zones in Times of Global Change

Print ISBN: 978-981-15-2080-8

Electronic ISBN: 978-981-15-2081-5

Copyright-Jahr: 2020

DOI
https://doi.org/10.1007/978-981-15-2081-5_16