Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR3.4k papers
- Lyon 1 UniversitéFR2k papers
- Centre de Recherche Astrophysique de LyonFR1.3k papers
- Laboratoire de Physique de l'ENS de LyonFR1.3k papers
- Université de LyonFR537 papers
- Unité de Mathématiques Pures et AppliquéesFR399 papers
- European Southern ObservatoryCL328 papers
- Laboratoire de l'Informatique du ParallélismeFR328 papers
- Sorbonne UniversitéFR283 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR269 papers
- Université Grenoble AlpesFR236 papers
- Institut national de recherche en sciences et technologies du numériqueFR233 papers
237 papers · 1 filter
The spatio-temporal statistical structure of the turbulent dissipation field and its stochastic representation as a Gaussian Multiplicative Chaos
Wandrille Ruffenach, Laurent Chevillard
The present article concerns the stochastic modeling of the turbulent dissipation field and in particular its temporal evolution. To do so, we will be calling for a random distribu…
A spatio-temporal random synthetic turbulent velocity field: The underlying Gaussian structure
Matthieu Chatelain, Júlia Domingues Lemos, Wandrille Ruffenach +5
We develop, simulate and extend an initial proposition by Chaves et al. concerning a random incompressible vector field able to reproduce key ingredients of three-dimensional turbu…
Convective regimes of internally heated steady thermal convection of temperature-dependent viscous fluid
Hisashi Okuda, Shin-ichi Takehiro, Stéphane Labrosse
We study dynamical regimes of thermal convection with temperature-dependent viscosity driven by homogeneous internal heating. Two-dimensional steady-state convective solutions with…
Droplet on a sugar fiber
Stéphane Dorbolo, Floriane Weyer, Alexandre Delory +2
The motion of a water droplet on a single vertical sugar fiber is analyzed. The fiber is positioned vertically, with the droplet placed at its pending end. If the capillary force e…
Spontaneous stochasticity and the Armstrong-Vicol passive scalar
W. Ruffenach, E. Simonnet, N. Valade
Spontaneous stochasticity refers to the emergence of intrinsic randomness in deterministic systems under singular limits, a phenomenon conjectured to be fundamental in turbulence.…
Disentangling discrete and continuous spectra of tidally forced internal waves in shear flow
Yohei Onuki, Antoine Venaille
Generation of internal waves driven by barotropic tides over seafloor topography is a central issue in developing mixing and wave drag parameterizations for ocean circulation model…
A toy model of turbulent shear flow using vortons
Wandrille Ruffenach, Lucas Fery, Bérengère Dubrulle
We introduce a novel toy model for shear flows, exploiting the spatial intermittency and the scale separation between large-scale flows and small-scale structures. The model is hig…
Does small-scale turbulence matter for ice growth in mixed-phase clouds?
G. Sarnitsky, G. Sardina, G. Svensson +3
Representing the glaciation of mixed-phase clouds in terms of the Wegener-Bergeron-Findeisen process is a challenge for many weather and climate models, which tend to overestimate…
Bubble dynamics in an inclined Hele-Shaw cell
Benjamin Monnet, J. John Soundar Jerome, Valérie Vidal +1
We report experimental results on the dynamics of large bubbles in a Hele-Shaw cell subject to various inclination angles with respect to gravity. Low Reynolds number cases are stu…
Topology of shallow-water waves on the rotating sphere
Nicolas Perez, Armand Leclerc, Guillaume Laibe +1
Topological properties of the spectrum of shallow-water waves on a rotating spherical body are established. Particular attention is paid to its spectral flow, i.e. the modes whose…
Numerical simulations of a stochastic dynamics leading to cascades and loss of regularity: applications to fluid turbulence and generation of fractional Gaussian fields
Geoffrey Beck, Charles-Edouard Bréhier, Laurent Chevillard +2
Motivated by the modeling of the spatial structure of the velocity field of three-dimensional turbulent flows, and the phenomenology of cascade phenomena, a linear dynamics has bee…
Lagrangian irreversibility and energy exchanges in rotating-stratified turbulent flows
Sebastian Gallon, Alessandro Sozza, Fabio Feraco +2
Turbulence in stratified and rotating turbulent flows is characterized by an interplay between waves and eddies, resulting in continuous exchanges between potential and kinetic ene…
Statistics of inhomogeneous turbulence in large scale quasi-geostrophic dynamics
Anton Svirsky, Corentin Herbert, Anna Frishman
A remarkable feature of two-dimensional turbulence is the transfer of energy from small to large scales. This process can result in the self-organization of the flow into large, co…
Lagrangian supersaturation fluctuations at the cloud edge
J. Fries, G. Sardina, G. Svensson +2
Evaporation of cloud droplets accelerates when turbulence mixes dry air into the cloud, affecting droplet-size distributions in atmospheric clouds, combustion sprays, and jets of e…
Role of pressure in generation of intense velocity gradients in turbulent flows
Dhawal Buaria, Alain Pumir
We investigate the role of pressure, via its Hessian tensor , on amplification of vorticity and strain-rate and contrast it with other inviscid nonlinear mechanisms. Re…
Two-dimensional turbulence with local interactions: statistics of the condensate
Anton Svirsky, Corentin Herbert, Anna Frishman
Two-dimensional turbulence self-organizes through a process of energy accumulation at large scales, forming a coherent flow termed a condensate. We study the condensate in a model…
Inertia induces strong orientation fluctuations of non-spherical atmospheric particles
T. Bhowmick, J. Seesing, K. Gustavsson +5
The orientation of non-spherical particles in the atmosphere, such as volcanic ash and ice crystals, influences their residence times, and the radiative properties of the atmospher…
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…
A playground for compressible natural convection with a nearly uniform density
Thierry Alboussiere, Jezabel Curbelo, Fabien Dubuffet +2
In the quest to understand the basic universal features of compressible convection, one would like to disentangle genuine consequences of compression from spatial variations of tra…
Superfluid drain vortex
Wandrille Ruffenach, Luca Galantucci, Carlo F. Barenghi
Drain vortices are among the most common vortices observed in everyday life, yet their physics is complex due to the competition of vorticity's transport and diffusion, and the pre…
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…
Functional renormalisation group approach to shell models of turbulence
Côme Fontaine, Malo Tarpin, Freddy Bouchet +1
Shell models are simplified models of hydrodynamic turbulence, retaining only some essential features of the original equations, such as the non-linearity, symmetries and quadratic…
Fast and Furious dynamo action in the anisotropic dynamo
Franck Plunian, Thierry Alboussière
In the limit of large magnetic Reynolds numbers, it is shown that a smooth differential rotation can lead to fast dynamo action, provided that the electrical conductivity or magnet…
Breaking of internal waves parametrically excited by ageostrophic anticyclonic instability
Yohei Onuki, Sylvain Joubaud, Thierry Dauxois
A gradient-wind balanced flow with an elliptic streamline parametrically excites internal inertia-gravity waves through ageostrophic anticyclonic instability (AAI). This study nume…