170 citations · 1.3k across the 49 of their papers we have counts for
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Stable and unstable capillary fingering in porous media with a gradient in grains size
Tom Vincent-Dospital, Marcel Moura, Renaud Toussaint +1
We present a theoretical and experimental investigation of slow drainage in porous media with a gradient in the grains size (and hence in the typical pores' throats), in an externa…
Visualization by optical fluorescence of two-phase flow in a three-dimensional porous medium
Joachim Falck Brodin, Marcel Moura, Renaud Toussaint +2
Slow flow of a single fluid through a porous medium is well understood on a macroscopic level through Darcy's law, a linear relation between flow rate and a combination of pressure…
Continuous to intermittent flows in growing granular heaps
L. Alonso-Llanes, E. Martínez, A. J. Batista-Leyva +2
If a granular material is poured from above on a horizontal surface between two parallel, vertical plates, a sand heap grows in time. For small piles, the grains flow smoothly down…
How heat controls fracture: the thermodynamics of creeping and avalanching cracks
Tom Vincent-Dospital, Renaud Toussaint, Stéphane Santucci +6
While of paramount importance in material science, the dynamics of cracks still lacks a complete physical explanation. The transition from their slow creep behavior to a fast propa…
Pressure evolution and deformation of confined granular media during pneumatic fracturing
Fredrik Eriksen, Renaud Toussaint, Antoine Turquet +2
By means of digital image correlation, we experimentally characterize the deformation of a dry granular medium confined inside a Hele-Shaw cell due to air injection at a constant o…
Granular Rayleigh-Taylor Instability: Experiments and Simulations
Jan Ludvig Vinningland, Oistein Johnsen, Eirik G. Flekkoy +2
A granular instability driven by gravity is studied experimentally and numerically. The instability arises as grains fall in a closed Hele-Shaw cell where a layer of dense granular…
Self-assembly and dynamics of magnetic holes
Arne T. Skjeltorp, Jorgen Akselvoll, Kai De Lange Kistiansen +4
Nonmagnetic particles in magnetized ferrofluids have been denoted magnetic holes and are in many ways ideal model systems to test various forms of particle self assembly and dynami…
Influence of pore-scale disorder on viscous fingering during drainage
Renaud Toussaint, Grunde Løvoll, Yves Méheust +2
We study viscous fingering during drainage experiments in linear Hele-Shaw cells filled with a random porous medium. The central zone of the cell is found to be statistically more…
Interaction model for magnetic holes in a ferrofluid layer
Renaud Toussaint, Jørgen Akselvoll, Eirik G. Flekkøy +2
Nonmagnetic spheres confined in a ferrofluid layer (magnetic holes) present dipolar interactions when an external magnetic field is exerted. The interaction potential of a microsph…