Solving 1-D de Saint Venant equations for flow calculation and sediment transport equation for bed load transport and morphological changes
Scientific issues
- Developing a robust code for hydrodynamic and morphological evolution permiting to simulate dam break waves and other extreme floods, including hydraulic jumps and supercritical flows
- Taking into account sediment variability using only two parameters median diameter d50 and standard deviation σ; how to manage the evolution fo these two parameters during mixtures, depositions, erosions, … for instance to simulate grain sorting
- Distribution of shear stresses to estimate the distribution of deposition and erosion across and along a river reach ; how to obtain river morphological evolution
General Information
In the Rubar 3 version, the software can be used to solve de Saint Venant equations only in case of flash floods, particularly dam break waves (specific module for progressive failure of embankments).
Rubar 3 as well as RubarBE can be coupled with respectively Rubar 20 or Rubar 20 TS in order to perform a coupled 1D /2D calculation.
To join us: rubar3@inrae.fr
Method & résults
- Most part of the recent developments was on the validation of the evolution of the sediment parameters (Camenen et al., 2018)
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| Bed evolution applying RubarBE on the experiments from Seal et al. (1997) |
Grain evolution (d50 ,σ ) applying RubarBE on the experiments from Seal et al. (1997) |
- During his PhD study, K. El kadi Abderrezzak v alidated the morphological code on laboratory and field cases (for floods and dam break waves) (El kadi Abderrezzak et al., 2008, El kadi Abderrezzak & Paquier 2009)
- Other studies validated the distribution of shear stresses across the section (Khodashenas & Paquier, A., 1999, Khodashenas et al., 2008) and the distribution of eroded / deposited volumes inside the section and the reach (Latapie, 2011)
Projects
- 2008-2012: InterReg Project « Redynamisation du Vieux-Rhin »
Partners
- Water Research Institute (WRI-VUVH), Bratislava, Slovakia: K. Holubova, M. Lukac; comparing morphological models
- UMR5600: H. Piégay et F. Arnaud, applying RubarBE on field data (Ain River)
Doctorates
- 2009-2012 : Béraud C. Modélisation numérique des impacts de recharges sédimentaires en rivière aménagée : Cas du Vieux-Rhin entre Kembs et Breisach. Université C. Bernard, Lyon 1. 249p.
- 2007-2011 : Latapie A. Modélisation de l’évolution morphologique d’un lit alluvial : Application à la Loire Moyenne. Université F. Rabelais, Tours. 277 p.
- 2003-2006: El kadi Abderrezzak K. Évolution d’un lit de rivière en fonction des apports. Université C. Bernard, Lyon 1.
- 1999-2001: Balayn P. Contribution à la modélisation numérique de l’évolution morphologique des cours d’eau aménagés lors de crues. Université C. Bernard, Lyon 1.
Publications
- Camenen, B., Béraud, C., Le Coz, J. & Paquier, A. (2018) 1D numerical simulation of sediment downstream fining during bed aggradation using a simplified grain size description. J. Hydraulic Res. 56(2): 168-180.
- Camenen B., Grabowski, R.C., Latapie, A., Paquier A., Solari, L. & Rodrigues, S. (2015). On the estimation of the bed-material transport and budget along a river segment: application to the Middle Loire River, France. Aquatic Sciences. 78:71-81.
- El kadi Abderrezzak, K., & Paquier, A. (2011). Applicability of sediment transport capacity formulas to dam-break flows over movable beds. Journal of Hydraulic Engineering, 137(2),
209–221. - El kadi Abderrezzak, K., & Paquier, A. (2009). One-dimensional numerical modeling of sediment transport and bed deformation in open channels. Water Resources Research, 45, W05404.
- El kadi Abderrezzak, K., Paquier, A., & Gay, B. (2008). One-dimensional numerical modelling of dam-break waves over movable beds: Application to experimental and field cases. Environmental Fluid Mechanics, 8(2), 169–198.
- El Kadi Abderrezzak K., Camenen B. & Paquier (2008). A. Discussion on “Estimation of the boundary shear stress distribution in open channel using flownet” by Yu G. & Tan S.K., J. of Hydraulic Res., 46(5): 716-720.
- Khodashenas, S.R., El Kadi Abderrezzak, K., Paquier,A. (2008). Boundary shear stress in open channel flow: A comparison among six methods. J. Hydr. Res. 46(5):598-609.
- Khodashenas, S.R., Paquier, A. (1999). A geometrical method for computing the distribution of boundary shear stress across irregular straight open channels. J. Hydr. Res. 37(3), 381–388.
- Paquier, A., & El Kadi Abderrezzak, K. (2008). A model for bedload transport and morphological evolution in rivers: Description and pertinence. In S. Benzoni Gavage & D. Serre (Eds.), Hyperbolic problems: Theory, numerics, applications (pp. 285–296). Berlin: Springer.
