100 citations · 428 across the 20 of their papers we have counts for
20 papers
Influence of the porosity pattern on the aerodynamics of a square plate
Ariane Gayout, Mickaël Bourgoin, Nicolas Plihon
The evolution of the normal aerodynamic coefficient of 19 configurations of square plates with various porosity patterns, ranging from solid plate to homogeneous porous plate, is e…
Path instabilities and drag in the settling of single spheres
Facundo Cabrera-Booman, Nicolas Plihon, Mickaël Bourgoin
The settling behavior of individual spheres in a quiescent fluid was studied experimentally. The dynamics of the spheres was analyzed in the parameter space of particle-to-fluid de…
Nonlinear interactions of ion acoustic waves explored using fast imaging decompositions
Simon Vincent, Vincent Dolique, Nicolas Plihon
Fast camera imaging is used to study ion acoustic waves propagating azimuthally in a magnetized plasma column. The high speed image sequences are analyzed using Proper Orthogonal D…
How dirt cones form on glaciers: field observation, laboratory experiments and modeling
Marceau Hénot, Vincent J. Langlois, Nicolas Plihon +1
Dirt cones are meter-scale structures encountered at the surface of glaciers, which consist of ice cones covered by a thin layer of ashes, sand or gravel, and which form naturally…
High-speed imaging of magnetized plasmas: when electron temperature matters
Simon Vincent, Vincent Dolique, Nicolas Plihon
High speed camera imaging is a powerful tool to probe the spatiotemporal features of unsteady processes in plasmas, usually assuming light fluctuations to be a proxy for the plasma…
Experimental validation of fluid inertia models for a cylinder settling in a quiescent flow
F. Cabrera, M. Z. Sheikh, B. Mehlig +4
The precise description of the motion of anisotropic particles in a flow rests on the understanding of the force and torque acting on them. Here, we study experimentally small, ver…
Onset of glacier tables
Marceau Hénot, Nicolas Plihon, Nicolas Taberlet
A glacier table consists of a rock supported by a slender column of ice and form naturally on glaciers. We investigate the onset of their formation at a smaller scale in a controll…
Rare event-triggered transitions in aerodynamic bifurcation
Ariane Gayout, Mickaël Bourgoin, Nicolas Plihon
The transitions between two states of a bistable system are investigated experimentally and analyzed in the framework of rare-event statistics. Considering a disk pendulum swept by…
Scaling laws in axisymmetric magnetohydrodynamic duct flows
A. Poyé, O. Agullo, N. Plihon +3
We report on a numerical study of axisymmetric flow of liquid metal in a circular duct with rectangular cross-section. The flow is forced through the combination of an axial magnet…
Sedimentation of a suspension of paramagnetic particles in an external magnetic field
Jérémy Vessaire, Nicolas Plihon, Romain Volk +1
We investigate the sedimentation of initially packed paramagnetic particles in presence of a homogeneous external magnetic field, in a Hele-Shaw cell filled with water. Although th…
Synthetic Schlieren -- application to the visualization and characterization of air convection
Nicolas Taberlet, Nicolas Plihon, Lucile Auzémery +3
Synthetic schlieren is an digital image processing optical method relying on the variation of optical index to visualize the flow of a transparent fluid. In this article, we presen…
Dynamo enhancement and mode selection triggered by high magnetic permeability
Sophia Kreuzahler, Yannick Ponty, Nicolas Plihon +2
We present results from consistent dynamo simulations, where the electrically conducting and incompressible flow inside a cylinder vessel is forced by moving impellers numerically…
Experimental investigation of double layers in expanding plasmas
N. Plihon, P. Chabert, C. S. Corr
Double layers (DLs) have been observed in a plasma reactor composed of a source chamber attached to a larger expanding chamber. Positive ion beams generated across the DL were char…
Dynamo regimes and transitions in the VKS experiment
M. Berhanu, G. Verhille, J. Boisson +14
The Von K{á}rm{á}n Sodium experiment yields a variety of dynamo regimes, when asymmetry is imparted to the flow by rotating impellers at different speed F1 and F2. We show that as…
Double layer formation in the expanding region of an inductively coupled electronegative plasma
N. Plihon, C. S. Corr, P. Chabert
Double-layers (DLs) were observed in the expanding region of an inductively coupled plasma with gas mixtures. No DL was observed in pure argon or $\text{SF…
Flow dynamics and magnetic induction in the von-Karman plasma experiment
Nicolas Plihon, Guillaume Bousselin, Francesco Palermo +7
The von-Karman plasma experiment is a novel versatile experimental device designed to explore the dynamics of basic magnetic induction processes and the dynamics of flows driven in…
Robust estimate of dynamo thresholds in the von Kármán sodium experiment using the Extreme Value Theory
Davide Faranda, Mickael Bourgoin, Sophie Miralles +5
We apply a new threshold detection method based on the extreme value theory to the von Kármán sodium (VKS) experiment data. The VKS experiment is a successful attempt to get a dyna…
Long-term memory in experiments and numerical simulations of hydrodynamic and magnetohydrodynamic turbulence
Pablo Mininni, Pablo Dmitruk, Philippe Odier +5
We analyze time series stemming from experiments and direct numerical simulations of hydrodynamic and magnetohydrodynamic turbulence. Simulations are done in periodic boxes, but wi…
Induction in a von Karman flow driven by ferromagnetic impellers
Gautier Verhille, Nicolas Plihon, Mickael Bourgoin +2
We study magnetohydrodynamics in a von Kármán flow driven by the rotation of impellers made of material with varying electrical conductivity and magnetic permeability. Gallium is t…
Large scale fluctuations and dynamics of the Bullard - von Kármán dynamo
Gautier Verhille, Nicolas Plihon, Grégory Fanjat +3
A synthetic fluid dynamo built in the spirit of the Bullard device [E. C. Bullard, Proc. Camb. Phil. Soc., 51, 744 (1955)] is investigated. It is a two-step dynamo in which one pro…