TY - GEN
T1 - Spatial and temporal analysis of the sand dynamics in alpine rivers for 3D numerical modelling
AU - Weit, A.
AU - Camenen, B.
AU - Dramais, G.
AU - Bel, C.
AU - Jodeau, M.
AU - Langlais, S.
AU - Lauters, F.
N1 - Publisher Copyright:
© 2025 The Author(s).
PY - 2025/1/1
Y1 - 2025/1/1
N2 - Hydraulic structures can impact the sediment continuity of the river and can create a sediment imbalance downstream of dams according to the different sediment classes (silt, sand, gravel). For operators, one important issue is the presence of sand (d>63 µm), which can lead to exploitation difficulties, issues for flushing or emptying operations as well as to ecological, industrial or safety issues. It was recognized that the percentage of sand particles that is trans ported by suspension compared to bedload transport can often prevail. However, today it is still a real challenge to evaluate the spatial and temporal variability of these sand concentrations in gravel-bed rivers since sand dynamics are generally supply limited. Using 3D hydro-sedimentary modelling could help to better understand processes of sand transport in rivers. In this article, we will present results from experimental monitoring that will then be used for 3D numerical modelling (TELEMAC 3D + Gaia) on engineered rivers in the Northern French Alps.
AB - Hydraulic structures can impact the sediment continuity of the river and can create a sediment imbalance downstream of dams according to the different sediment classes (silt, sand, gravel). For operators, one important issue is the presence of sand (d>63 µm), which can lead to exploitation difficulties, issues for flushing or emptying operations as well as to ecological, industrial or safety issues. It was recognized that the percentage of sand particles that is trans ported by suspension compared to bedload transport can often prevail. However, today it is still a real challenge to evaluate the spatial and temporal variability of these sand concentrations in gravel-bed rivers since sand dynamics are generally supply limited. Using 3D hydro-sedimentary modelling could help to better understand processes of sand transport in rivers. In this article, we will present results from experimental monitoring that will then be used for 3D numerical modelling (TELEMAC 3D + Gaia) on engineered rivers in the Northern French Alps.
UR - https://www.scopus.com/pages/publications/105003206436
U2 - 10.1201/9781003475378-66
DO - 10.1201/9781003475378-66
M3 - Conference contribution
AN - SCOPUS:105003206436
SN - 9781032757216
T3 - River Flow - Proceedings of the 12th International Conference on Fluvial Hydraulics, River Flow 2024
SP - 448
EP - 453
BT - Proceedings of the 12th International Conference on Fluvial Hydraulics, River Flow 2024
A2 - Carnacina, Iacopo
A2 - Abdellatif, Mawada
A2 - Andredaki, Manolia
A2 - Cooper, James
A2 - Lumbroso, Darren
A2 - Ruiz-Villanueva, Virginia
PB - CRC Press/Balkema
T2 - 12th International Conference on Fluvial Hydraulics, River Flow 2024
Y2 - 2 September 2024 through 6 September 2024
ER -