211 citations · 995 across the 22 of their papers we have counts for
22 papers
Erosion induced by a disk translating toward or away from a granular bed
Joanne Steiner, Philippe Gondret, Alban Sauret +1
Unsteady flows generated when a body approaches or departs from a granular bed arise in swimming, burrowing, and maneuvering devices. Yet, the threshold for grain motion in such tr…
Vortex ring induced by a disk translating toward or away from a wall
Joanne Steiner, Cyprien Morize, Ivan Delbende +2
This study investigates the time evolution of vortex rings generated by the normal translation of a disk either toward or away from a wall. We systematically vary the control param…
Nascent water waves induced by the impulsive motion of a solid wall
Wladimir Sarlin, Zhaodong Niu, Alban Sauret +2
In the present study, we investigated the generation phase of laboratory-scale water waves induced by the impulsive motion of a rigid piston, whose maximum velocity and total s…
The effects of interparticle cohesion on the collapse of granular columns
Ram Sudhir Sharma, Wladimir Sarlin, Langqi Xing +3
The presence of interparticle cohesion can drastically change the behavior of granular materials. For instance, powders are challenging to handle, and one can make a sandcastle usi…
Vortex rings generated by a translating disk from start to stop
Joanne Steiner, Cyprien Morize, Ivan Delbende +2
In this article, we investigate experimentally and numerically the time evolution of vortex rings generated by the translation of a rigid disk in a fluid initially at rest and subm…
Downslope granular flow through a forest of obstacles
Baptiste Darbois Texier, Yann Bertho, Philippe Gondret
We investigate the effect of a forest of pillars on a granular layer steadily flowing over a rough inclined plane. We quantify experimentally how the steady flow rate of grains is…
From granular collapses to shallow water waves: A predictive model for tsunami generation
Wladimir Sarlin, Cyprien Morize, Alban Sauret +1
In this article, we present a predictive model for the amplitude of impulse waves generated by the collapse of a granular column into a water layer. The model, which combines the s…
Erosion of cohesive grains by an impinging turbulent jet
Ram Sudhir Sharma, Mingze Gong, Sivar Azadi +3
The erosion and transport of particles by an impinging turbulent jet in air is observed in various situations, such as the cleaning of a surface or during the landing of a spacecra…
Collapse dynamics of dry granular columns: from free-fall to quasi-static flow
Wladimir Sarlin, Cyprien Morize, Alban Sauret +1
Gravity-driven collapses involving large amounts of dense granular material, such as landslides, avalanches, or rockfalls, in a geophysical context, represent significant natural h…
Non-linear regimes of tsunami waves generated by a granular collapse
Wladimir Sarlin, Cyprien Morize, Alban Sauret +1
Tsunami waves induced by landslides are a threat to human activities and safety along coastal areas. In this paper, we characterize experimentally the waves generated by the gravit…
Experimental investigation of tsunami waves generated by granular collapse into water
M. Robbe-Saule, C. Morize, R. Henaff +3
The generation of a tsunami wave by an aerial landslide is investigated through model laboratory experiments. We examine the collapse of an initially dry column of grains into a sh…
Polar waves and chaotic flows in thin rotating spherical shells
F. Garcia, F. R. N. Chambers, A. L. Watts
Convection in rotating spherical geometries is an important physical process in planetary and stellar systems. Using continuation methods at low Prandtl number, we find both strong…
Competitive dynamics of two erosion patterns around a cylinder
F. Lachaussée, Y. Bertho, C. Morize +2
We investigate experimentally the local erosion of a granular bed near a fixed vertical cylinder that emerges from the bed. The onset of erosion arising at the base of the cylinder…
Local rheological measurements in the granular flow around an intruder
A. Seguin, C. Coulais, F. Martinez +2
The rheological properties of granular matter within a two-dimensional flow around a moving disk is investigated experimentally. Using a combination of photoelastic and standard te…
Experimental velocity fields and forces for a cylinder penetrating into a granular medium
A. Seguin, Y. Bertho, F. Martinez +2
We present here a detailed granular flow characterization together with force measurements for the quasi-bidimensional situation of a horizontal cylinder penetrating vertically at…
Stability of a granular layer on an inclined "fakir plane"
Jesica Benito, Yann Bertho, Irene Ippolito +1
We present here experimental results on the effect of a forest of cylinder obstacles (nails) on the stability of a granular layer over a rough incline, in a so-called "fakir plane"…
Dense granular flow around a penetrating object: Experiments and hydrodynamic model
Antoine Seguin, Yann Bertho, Philippe Gondret +1
We present in this Letter experimental results on the bidimensional flow field around a cylinder penetrating into dense granular matter together with drag force measurements. A hyd…
Sphere penetration by impact in a granular medium: A collisional process
Antoine Seguin, Yann Bertho, Philippe Gondret +1
The penetration by a gravity driven impact of a solid sphere into a granular medium is studied by two-dimensional simulations. The scaling laws observed experimentally for both the…
Dynamics of grain ejection by sphere impact on a granular bed
Stéphanie Deboeuf, Philippe Gondret, Marc Rabaud
The dynamics of grain ejection consecutive to a sphere impacting a granular material is investigated experimentally and the variations of the characteristics of grain ejection with…
Influence of confinement on granular penetration by impact
Antoine Seguin, Yann Bertho, Philippe Gondret
We study experimentally the influence of confinement on the penetration depth of impacting spheres into a granular medium contained in a finite cylindrical vessel. The presence of…
Granular Avalanches in Fluids
S. Courrech du Pont, P. Gondret, B. Perrin +1
Three regimes of granular avalanches in fluids are put in light depending on the Stokes number St which prescribes the relative importance of grain inertia and fluid viscous effect…
Wall effects on granular heap stability
S. Courrech du Pont, P. Gondret, B. Perrin +1
We investigate the effects of lateral walls on the angle of movement and on the angle of repose of a granular pile. Our experimental results for beads immersed in water are similar…