Granular LAB
Experimental research in granular materials, multiphase flow, and nonlinear physics.
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A native macOS laboratory for interactive 2D granular DEM simulations, live observables, teaching examples, and scientific visualization.
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Current work
Jets impacting on a solid obstacle or confined in a cavity can develop self-sustained oscillations. Do these oscillations arise when the jet impacts a porous medium? What is the coupling with crater morphology? The present work focuses on the stability of a liquid jet when impacting a confined saturated granular bed.
Crater formation has been widely studied through different strategies. One of them consists on simplifying the problem to the impact of a spherical projectile on a granular layer. Due to technical limitations, experimental studies have focused independently on either the corolla formation or the deformation inside the granular bed. Hence, so far, it has not been possible to link these two processes. Here, we present an original experiment that allows to simultaneously observe the granular dynamics both above and below the granular layer in microgravity conditions.
We study and characterize pattern formation in immersed granular systems, when submitted to an ascending flow (gas or liquid). We are interested in the dynamics of the air-flow patterns under one or multiple injection points at the base (by imposing a constant pressure or flow-rate)
We explore the role of the geometry on a Hele-Shaw cell filled with grains. At constant energy we can transit from a solid or fluid modified only the boundary conditions.
One intruder in a granular bath can behave as if it were Brownian. Current experiments ask whether two or more intruders show measurable interactions in the same environment.
A visual record of Granular LAB, past and present.
Selected public updates, media appearances and visual notes from the laboratory.
Progress on a vehicle for the efficient and autonomous collection of waste on beaches.
The article “Geometrical description of impact cratering under microgravity conditions” was selected for the cover of Granular Matter.
A high-speed-camera image of steel beads on a vertically vibrated plate was selected for the Association Française de Mécanique scientific photography competition.
Public conversation about granular physics, experiments and current research at Granular LAB.
Media appearance discussing research, laboratory work and public science.
