A large scale morphodynamic process-based model of the Gironde estuary

C. Villaret, N. Huybrechts, A.G Davies

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We present here our effort to develop a morphodynamic model of the Gironde estuary, using a process-based approach. In this complex and strongly dynamical environment, internal coupling between the flow (Telemac-2d) and sediment transport models (Sisyphe) allows the representation of detailed sediment processes and interactions with the bed, using a bed roughness feedback method. In this complex and highly heterogeneous environment, the sediment bed composition had to be schematized assuming 3 classes of bed material. Model results could be further improved by accounting for the cohesive sediment (consolidation processes). Thanks to parallelization of the codes, the simulation takes only 18 hrs on 8 processors (linux station) to calculate the 5-year bed evolution, at the basin scale (150 km).
Original languageEnglish
Title of host publicationJubilee Conference Proceedings NCK-days 2012
Subtitle of host publicationCrossing borders in coastal research
EditorsW.M. Kranenburg, E.M. Horstman, K.M. Wijnberg
PublisherUniversity of Twente
Number of pages8
ISBN (Print)978-90-365-3342-3
Publication statusPublished - 2012
Externally publishedYes
EventNCK-Days 2012: Crossing borders in coastal research - Enschede, Netherlands
Duration: 13 Mar 201216 Mar 2012


ConferenceNCK-Days 2012


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