Modelling of massive bedload deposition in a debris basin: cross comparison between numerical and small scale modelling - Archive ouverte HAL Access content directly
Conference Papers Year : 2020

Modelling of massive bedload deposition in a debris basin: cross comparison between numerical and small scale modelling

Abstract

A small-scale physical model was build and used to study deposition processes in a planned debris basin in the French Alps. Numerical simulations were then undertaken with a 2D depth-averaged hydraulic and morphologic numerical model in order to check its ca-pability to reproduce flow and bed changes in this steep and laterally unconfined case with coarse sediment. The paper focuses on the set-up of the numerical model, which en-ables to get results very similar to the physical model. Old and state-of-the-art formula-tions for friction law and for bedload transport equation were compared. More precisely, the best performance were obtained with a friction law valid for small relative flow depth and bedload transport formulation using a non-threshold equation.
Fichier principal
Vignette du fichier
GonzalesDeLinaresEtAl2020LanceyHAL.pdf (1.17 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-02935173 , version 1 (10-09-2020)

Licence

Attribution

Identifiers

  • HAL Id : hal-02935173 , version 1

Cite

Matthieu Gonzales de Linares, Vincent Mano, Guillaume Piton, Alain Recking. Modelling of massive bedload deposition in a debris basin: cross comparison between numerical and small scale modelling. RiverFlow 2020, Jul 2020, Delft, Netherlands. ⟨hal-02935173⟩
77 View
91 Download

Share

Gmail Facebook X LinkedIn More