46 citations · 178 across the 10 of their papers we have counts for
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Experimental study of diffusiophoresis in a cellular flow
Florence Raynal, Menghua Zhao, Romain Volk
In this article, we study experimentally the dispersion of colloids in a two-dimensional, time independent, Rayleigh-Bénard flow in the presence of salt gradients. Due to the addit…
Phoresis in cellular flows: from enhanced dispersion to blockage
Romain Volk, Michaël Bourgoin, Charles-Édouard Bréhier +1
In this article, we study numerically the dispersion of colloids in a two-dimensional cellular flow in the presence of an imposed mean salt gradient. Owing to the additional scalar…
Residence time distributions for in-line chaotic mixers
Nelson Poumaëre, Benoît Pier, Florence Raynal
We investigate the distributions of residence time for in-line chaotic mixers; in particular, we consider the Kenics, the F-mixer and the Multi-level laminating mixer, and also a s…
Mixing and unmixing induced by active camphor particles
Clément Gouiller, Florence Raynal, Laurent Maquet +4
In this experimental study, we report on the mixing properties of interfacial colloidal floaters (glass bubbles) by chemical and hydrodynamical currents generated by self-propelled…
Kolmogorovian active turbulence of a sparse assembly of interacting swimmers
Mickael Bourgoin, Ronan Kervil, Cecile Cottin-Bizonne +3
Active matter, composed of self-propelled entities, forms a wide class of out-of-equilibrium systems that display striking collective behaviors among which the so-called active tur…
Diffusiophoresis, Batchelor scale and effective Péclet numbers
Florence Raynal, Romain Volk
We study the joint mixing of colloids and salt released together in a stagnation point or in a globally chaotic flow. In the presence of salt inhomogeneities, the mixing time is st…
Advection and diffusion in a chemically induced compressible flow
Florence Raynal, Mickael Bourgoin, Cécile Cottin-Bizonne +2
We study analytically the joint dispersion of Gaussian patches of salt and colloids in linear flows, and how salt gradients accelerate or delay colloid spreading by diffusiophoreti…
Diffusiophoresis at the macroscale
Cyril Mauger, Romain Volk, Nathanael Machicoane +4
Diffusiophoresis, a ubiquitous phenomenon that induces particle transport whenever solute concentration gradients are present, was recently observed in the context of microsystems…
The distribution of "time of flight" in three dimensional stationary chaotic advection
Florence Raynal, Philippe Carrière
The distributions of "time of flight" (time spent by a single fluid particle between two crossings of the Poincaré section) are investigated for five different 3D stationary chaoti…
Chaotic mixing in effective compressible flows
Romain Volk, Cyril Mauger, Mickael Bourgoin +3
We study numerically joint mixing of salt and colloids by a chaotic velocity field , and how salt inhomogeneities accelerate or delay colloid mixing by inducing a veloc…