80 citations · 255 across the 11 of their papers we have counts for
11 papers
Numerical investigation of mode failures in submerged granular columns
Eduard Puig Montellà, Julien Chauchat, Cyrille Bonamy +3
In submerged sandy slopes, soil is frequently eroded as a combination of two main mechanisms: breaching, which refers to the retrogressive failure of a steep slope forming a turbid…
A modified kinetic theory for frictional-collisional bedload transport valid from dense to dilute regime
Rémi Chassagne, Julien Chauchat, Cyrille Bonamy
Modelling sediment transport is still a challenging problem and is of major importance for the study of particulate geophysical flows. In this work, the modelling of sediment trans…
On the physical origin of enhanced turbulent-dispersion of inertial particles in boundary layer flows
Julien Chauchat, David Hurther, Thibaud Revil-Baudard +2
One of the most enigmatic science question concerning inertial particle transport by a turbulent boundary layer flow is the value of the turbulent Schmidt number as the ratio of pa…
Mobility of bidisperse mixtures during bedload transport
Rémi Chassagne, Raphaël Maurin, Julien Chauchat +1
The flow of segregated bidisperse assemblies of particles is of major importance for geophysical flows and bedload transport in particular. In the present paper, the mobility of bi…
A finite-size correction model for two-fluid Large-Eddy Simulation of particle-laden boundary layer flow
Antoine Mathieu, Julien Chauchat, Cyrille Bonamy +2
In this paper the capabilities of the turbulence-resolving Eulerian-Eulerian two-phase flow model to predict the suspension of mono-dispersed finite-sized solid particles in a boun…
Bridging the gap between particle-scale forces and continuum modelling of size segregation: application to bedload transport
Hugo Rousseau, Rémi Chassagne, Julien Chauchat +2
Gravity-driven size segregation is important in mountain streams where a wide range of grain sizes are transported as bedload. More particularly, vertical size segregation is a mul…
Grain size segregation during bedload transport on steep slopes
Rémi Chassagne, Raphaël Maurin, Julien Chauchat +2
Size segregation in bedload transport is studied numerically with a coupled fluid-discrete element model. Starting from an initial deposit of small spherical particles on top of a…
Revisiting slope influence in turbulent bedload transport: consequences for vertical flow structure and transport rate scaling
Raphael Maurin, Julien Chauchat, Philippe Frey
Gravity-driven turbulent bedload transport has been extensively studied over the past century in regard to its importance for Earth surface processes such as natural riverbed morph…
A minimal coupled fluid-discrete element model for bedload transport
Raphael Maurin, Julien Chauchat, Bruno Chareyre +1
A minimal Lagragian two-phase model to study turbulent bedload transport focusing on the granular phase is presented, and validated with experiments. The model intends to describe…
Dense granular flow rheology in turbulent bedload transport
Raphael Maurin, Julien Chauchat, Philippe Frey
The local granular rheology is investigated numerically in turbulent bedload transport. Considering spherical particles, steady uniform configurations are simulated using a coupled…
Microscopic origins of shear stress in dense fluid-grain mixtures
Donia Marzougui, Bruno Chareyre, Julien Chauchat
A numerical model is used to simulate rheometer experiments at constant normal stress on dense suspensions of spheres. The complete model includes sphere-sphere contacts using a so…