35 citations · 186 across the 12 of their papers we have counts for
12 papers · 1 filter
Lagrangian dispersion in experimental stratified turbulence
Maelys Magnier, Costanza Rodda, Clément Savaro +5
Lagrangian measurements of tracer particle dispersion in stratified turbulence are presented from a large-scale experiment achieving both high buoyancy Reynolds numbers and low Fro…
An experimental study on the settling velocity of inertial particles in different homogeneous isotropic turbulent flows
Amélie Ferran, Nathanaël Machicoane, Alberto Aliseda +1
We propose an experimental study on the gravitational settling velocity of dense, sub-Kolmogorov inertial particles under different background turbulent flows. We report Phase Dopp…
Wake of inertial waves of a horizontal cylinder in horizontal translation
Nathanaël Machicoane, Vincent Labarre, Bruno Voisin +2
We analyze theoretically and experimentally the wake behind a horizontal cylinder of diameter horizontally translated at constant velocity in a fluid rotating about the ver…
Two-dimensionalization of the flow driven by a slowly rotating impeller in a rapidly rotating fluid
Nathanaël Machicoane, Frédéric Moisy, Pierre-Philippe Cortet
We characterize the two-dimensionalization process in the turbulent flow produced by an impeller rotating at a rate in a fluid rotating at a rate around the same axis for R…
Improvements on Particle Tracking Velocimetry: model-free calibration and noiseless measurement of second order statistics of the velocity field
Nathanael Machicoane, Miguel Lopez-Caballero, Mickael Bourgoin +2
This article describes two independent developments aimed at improving the Particle Tracking Method for measurements of flow or particle velocities. First, a stereoscopic multicame…
Turbulent drag in a rotating frame
Antoine Campagne, Nathanaël Machicoane, Basile Gallet +2
What is the turbulent drag force experienced by an object moving in a rotating fluid? This open and fundamental question can be addressed by measuring the torque needed to drive an…
Stochastic dynamics of particles trapped in turbulent flows
N Machicoane, M López-Caballero, L Fiabane +4
The long time dynamics of large particles trapped in two inhomogeneous turbulent shear flows is studied experimentally. Both flows present a common feature, a shear region that sep…
Lagrangian velocity and acceleration correlations of large inertial particles in a closed turbulent flow
Nathanaël Machicoane, Romain Volk
We investigate the response of large inertial particle to turbulent fluctuations in a inhomogeneous and anisotropic flow. We conduct a Lagrangian study using particles both heavier…
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…
Influence of the multipole order of the source on the decay of an inertial wave beam in a rotating fluid
Nathanaël Machicoane, Pierre-Philippe Cortet, Bruno Voisin +1
We analyze theoretically and experimentally the far-field viscous decay of a two-dimensional inertial wave beam emitted by a harmonic line source in a rotating fluid. By identifyin…
Large spheres motion in a non homogeneous turbulent flow
Nathanael Machicoane, Robert Zimmermann, Lionel Fiabane +3
We investigate the dynamics of very large particles freely advected in a turbulent von Karman flow. Contrary to other experiments for which the particle dynamics is generally studi…
Melting dynamics of large ice balls in a turbulent swirling flow
N. Machicoane, J. Bonaventure, R. Volk
We study the melting dynamics of large ice balls in a turbulent von Karman flow at very high Reynolds number. Using an optical shadowgraphy setup, we record the time evolution of p…