46 citations · 361 across the 17 of their papers we have counts for
17 papers
The effective diffusivity of ordered and freely evolving bubbly suspensions
Aurore Loisy, Aurore Naso, Peter D. M. Spelt
We investigate the dispersion of a passive scalar such as the concentration of a chemical species, or temperature, in homogeneous bubbly suspensions, by determining an effective di…
Multi-particle Lagrangian statistics in homogeneous rotating turbulence
Juan Ignacio Polanco, S. Arun, Aurore Naso
Geophysical flows are often turbulent and subject to rotation. This rotation modifies the structure of turbulence and is thereby expected to sensibly affect its Lagrangian properti…
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…
Effect of particle inertia on the alignment of small ice crystals in turbulent clouds
K. Gustavsson, M. Z. Sheikh, A. Naso +2
Small non-spherical particles settling in a quiescent fluid tend to orient so that their broad side faces down, because this is a stable fixed point of their angular dynamics at sm…
Importance of fluid inertia for the orientation of spheroids settling in turbulent flow
Muhammad Zubair Sheikh, Kristian Gustavsson, Diego Lopez +4
How non-spherical particles orient as they settle in a flow has important practical implications in a number of scientific and engineering problems. In a quiescent fluid, a slowly…
Theory for the effect of fluid inertia on the orientation of a small particle settling in turbulence
K. Gustavsson, M. Z. Sheikh, D. Lopez +3
Ice crystals settling through a turbulent cloud are rotated by turbulent velocity gradients. In the same way, turbulence affects the orientation of aggregates of organic matter set…
A flow-pattern map for phase separation using the Navier-Stokes Cahn-Hilliard model
Aurore Naso, Lennon O'Naraigh
We use the Navier-Stokes-Cahn-Hilliard model equations to simulate phase separation with flow. We study coarsening - the growth of extended domains wherein the binary mixture phase…
Small-scale anisotropy induced by spectral forcing and by rotation in non-helical and helical turbulence
Donato Vallefuoco, Aurore Naso, Fabien Godeferd
We study the effect of large-scale spectral forcing on the scale-dependent anisotropy of the velocity field in direct numerical simulations of homogeneous incompressible turbulence…
Statistical model for the orientation of non-spherical particles settling in turbulence
K. Gustavsson, J. Jucha, A. Naso +3
The orientation of small anisotropic particles settling in a turbulent fluid determines some essential properties of the suspension. We show that the orientation distribution of sm…
Introduction of longitudinal and transverse Lagrangian velocity increments in homogeneous and isotropic turbulence
Emmanuel Leveque, Aurore Naso
Based on geometric considerations, longitudinal and transverse Lagrangian velocity increments are introduced as components along, and perpendicular to, the displacement of fluid pa…
Flow-parametric regulation of shear-driven phase separation in two and three dimensions
Lennon O'Naraigh, Selma Shun, Aurore Naso
The Cahn-Hilliard equation with an externally-prescribed chaotic shear flow is studied in two and three dimensions. The main goal is to compare and contrast the phase separation in…
Dual local and non-local cascades in 3D turbulent Beltrami flows
E. Herbert, F. Daviaud, B. Dubrulle +2
We discuss the possibility of dual local and non-local cascades in a 3D turbulent Beltrami flow, with inverse energy cascade and direct helicity cascade, by analogy with 2D turbule…
Statistical mechanics of Fofonoff flows in an oceanic basin
A. Naso, P. H. Chavanis, B. Dubrulle
We study the minimization of potential enstrophy at fixed circulation and energy in an oceanic basin with arbitrary topography. For illustration, we consider a rectangular basin an…
Statistical mechanics of Beltrami flows in axisymmetric geometry: Equilibria and bifurcations
Aurore Naso, Simon Thalabard, Gilles Collette +2
We characterize the thermodynamical equilibrium states of axisymmetric Euler-Beltrami flows. They have the form of coherent structures presenting one or several cells. We find the…
Statistical mechanics of Beltrami flows in axisymmetric geometry: Theory reexamined
Aurore Naso, Romain Monchaux, Pierre-Henri Chavanis +1
A simplified thermodynamic approach of the incompressible axisymmetric Euler equations is considered based on the conservation of helicity, angular momentum and microscopic energy.…
Statistical mechanics of two-dimensional Euler flows and minimum enstrophy states
A. Naso, P. H. Chavanis, B. Dubrulle
A simplified thermodynamic approach of the incompressible 2D Euler equation is considered based on the conservation of energy, circulation and microscopic enstrophy. Statistical eq…
Relaxation equations for two-dimensional turbulent flows with a prior vorticity distribution
P. H. Chavanis, A. Naso, B. Dubrulle
Using a Maximum Entropy Production Principle (MEPP), we derive a new type of relaxation equations for two-dimensional turbulent flows in the case where a prior vorticity distributi…