1D hydro-sedimentary modelling: AdisTS

 Problématique scientifique

Development of a numerical code enabling hydro-sedimentary calculations over long reaches (several hundred kilometres) and over long periods (several decades). The Mage code solves the one-dimensional Barré-de-Saint-Venant equations; the AdisTS  code solves the advection-dispersion equation for a sediment/pollutant concentration with potential exchanges with the river-bed via a source term.

Codes sources

The source codes for Mage and AdisTS are open-source and available here (in French) : 
https://gitlab.irstea.fr/jean-baptiste.faure/mage
https://gitlab.irstea.fr/jean-baptiste.faure/adists

Questions scientifiques

• Development of a parallelized calculation code allowing high performance calculation times
• Consideration of exchanges at the riverbed/water column interface on the scale of the river cross- section (main channel and flood plain)
• Understanding the dynamics of suspended matter over a long stretch of river
• Grain sorting linked to suspension

Méthodologie & résultats

• Development of a model of the River that integrates dam regulation laws (Dugué et al., 2015)

• Development and validation of the source terms of the AdisTS code (Guertault et al., 2016), application to the modelling of the Génissiat reservoir on the Upper-Rhône during dam flushing events.

Bed evolution of the Génissiat dam reservoir dafter the 1984 flushing event, application of AdisTS

SSM fluxes on each of the gates of the Génissiat dam; comparison of the AdisTS model and measurements

Projets

• 2019-2022: ANR project DEAR Deposition and Erosion of fines sediments in Alpine Rivers
• 2011-2023: Rhône Sediment Observatory (OSR2: 2011-2013, OSR4: 2015-2017, OSR5: 2018-2020, OSR6: 2021-2023, OSR7: 2024-2026)
• 2009-2011: Project Axelera-PCB

Partenaires

• UMR5600, Cerege on the application of Mage on the River Rhône
• CNR, utilisation of Mage-AdisTSon the River Rhône, Arc-Isère system and River Mekong

Thèses et post-doctorats

• 2019-2022 : Deng J. Fine sediment dynamics in alternating gravel bar systems in an engineered mountain river. University C. Bernard, Lyon 1.
• 2012-2015 : Guertault L. Assessment of the hydro-sedimentary processes of an elongated reservoir: application to the Génissiat dam reservoir on the Upper-Rhône river. University C. Bernard, Lyon 1. 240 p.
• 2010-2013 : Antoine G. Fine sediment dynamics along managed rivers: the Arc and the Isère rivers. University Grenoble. 286 p.

Publications

• Camenen, B., Kieffer, L., Le Coz, J., Dugué, V. & Reynaud, S. (2024). Long-term modelling of dam reservoir deposits in the River Rhône from Lake Geneva to Lyon, France. Proc. 12th RiverFlow conference, Liverpool, England, Sept. 2024, 8 p.
• Vazquez-Tarrio, D., Tal, M., Camenen, B. & Piegay, H. (2019). Changes in bed load transport capacities along a multi-dammed reach over the last 150 years : assessment of causal factors and feedbacks for restoration. Science of the Total Environment, 658:1375-1389.
• Launay, M., Dugué, V., Faure, J.-B., Coquery, M., Camenen, B. & Le Coz J. (2019) Numerical modelling of the suspended particulate matter dynamics in a regulated river network.. Science of the Total Environment, 665:591-605.
• Guertault, L., Camenen B., Peteuil, C., & Paquier, A. (2018). A one-dimensional process-based approach to study reservoir sediment dynamics during management operations. Earth Surface Processes & Landforms, 43(2): 373-386.
• Guertault, L., Camenen B., Peteuil, C., Paquier, A. & Faure, J.-B. (2016). One-dimensional modelling of suspended sediment dynamics in dam reservoirs. J. Hydraulic Eng., 142(10.1061):1-9.
• Launay, M., Le Coz, J., Angot, H., Dramais, G., Andriès, E., Camenen, B., Faure, J.B. & Coquery, M. (2015). Numerical and physical simulation of soluble contaminant transport through complex large river systems. J. Hydro-Environment Res. 9:120-132.
• Dugué, V., Walter, C., Andriès, E., Launay, M., Le Coz, J., Camenen, B. & Faure, J.-B (2015). Accounting for hydropower schemes’ Operation rules in the 1D hydrodynamic modeling of the Rhône river from lake Geneva to the Mediterranean Sea. Proc. 36th IAHR World Congress, La Haye, Pays Bas, June 2015, 8p.