Many fluid-dynamical systems met in nature are quasi-two-dimensional: they are
constrained to evolve in approximately two dimensions with little or no variation along the …

We review three different approaches to investigate the non-equilibrium stochastic dynamics
of a Josephson junction affected by Lévy-distributed current fluctuations. First, we study the …

I first recall the theoretical background relevant to spectral truncation: absolute equilibrium in
helical flows and compressible effects. Thermalization phenomenology in Gross–Pitaevskii …

Turbulence is a widely observed state of fluid flows, characterized by complex, nonlinear
interactions between motions across a broad spectrum of length and time scales. While …

On–off intermittency occurs in nonequilibrium physical systems close to bifurcation points,
and is characterised by an aperiodic switching between a large-amplitude'on'state and a …

Three-dimensional (3D) instabilities on a (potentially turbulent) two-dimensional (2D) flow
are still incompletely understood, despite recent progress. Here, based on known physical …

We study the effect of confinement on the three-dimensional linear instability of fast-rotating
two-dimensional turbulent flows. Using large-scale friction to model the effect of rigid …

Many issues pioneered by Jackson Herring deal with how nonlinear interactions shape
atmospheric dynamics. In this context, we analyze new direct numerical simulations of …

We study the effect of confinement on the three-dimensional linear instability of fastly rotating
two-dimensional turbulent flows. Using the large scale friction to model the effect of top and …

Instabilities arise in many physical systems at some parameter threshold. Typically the
system is embedded in an uncontrolled noisy environment. The fluctuating properties of the …