TY - GEN
T1 - Vers une méthodologie opérationnelle pour la caractérisation et la modélisation numérique de la dynamique des sédiments fins dans les retenues
AU - De Linares, Matthieu
AU - Cazaillet, Olivier
AU - Peteuil, Christophe
AU - Alliau, Damien
AU - Antoine, Germain
AU - Jodeau, Magali
AU - Valette, Eric
N1 - Publisher Copyright:
© 2018 ICOLD/CIGB, Paris, France.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - Multi-dimensional numerical modelling (2D or 3D) enables to simulate the dynamics and evolution of sediment deposits in reservoirs, and can replace or complement physical modelling, which is intrinsically very limited for the case of cohesive sediment. Case studies are presented, which validate different steps necessary for the numerical modelling of sediments dynamics in reservoirs. Computation of bed shear stress by a 3D numerical model is validated by comparison with measurements on a physical model. Experience feedback on sediment characterization is presented. It concerns fall velocity and erodibility, in order to parameterize the model. Finally, an example of modelling of reservoir deposition including both cohesive and non-cohesive sediment is presented.
AB - Multi-dimensional numerical modelling (2D or 3D) enables to simulate the dynamics and evolution of sediment deposits in reservoirs, and can replace or complement physical modelling, which is intrinsically very limited for the case of cohesive sediment. Case studies are presented, which validate different steps necessary for the numerical modelling of sediments dynamics in reservoirs. Computation of bed shear stress by a 3D numerical model is validated by comparison with measurements on a physical model. Experience feedback on sediment characterization is presented. It concerns fall velocity and erodibility, in order to parameterize the model. Finally, an example of modelling of reservoir deposition including both cohesive and non-cohesive sediment is presented.
UR - https://www.scopus.com/pages/publications/85061510518
M3 - Contribution à une conférence
AN - SCOPUS:85061510518
SN - 9781138612280
T3 - 26th International Congress on Large Dams, 2018
SP - 117
EP - 138
BT - 26th International Congress on Large Dams, 2018
PB - CRC Press/Balkema
T2 - 26th International Congress on Large Dams, 2018
Y2 - 4 July 2018 through 6 July 2018
ER -