Flow in a stably stratified environment is characterized by anisotropic and intermittent turbulence and wavelike motions of varying amplitudes and periods. Understanding turbulence intermittency and wave-turbulence ...

We study the effect of different forcing functions and of the local gradient Richardson number Rig on the vertical transport of Lagrangian tracers in stably stratified turbulence under the Boussinesq approximation and ...

We show that the phase space of stratified turbulence mainly consists of two slow invariant manifolds with rich physics, embedded on a larger basin with fast evolution. A local invariant manifold in the vicinity of the ...

We perform two high-resolution direct numerical simulations of stratified turbulence for Reynolds number equal to Re ≈ 25 000 and Froude number, respectively, of Fr ≈ 0.1 and Fr ≈ 0.03. The flows are forced at large scale ...

There is a clear distinction between simple laminar and complex turbulent fluids; however, in some cases, as forthe nocturnal planetary boundary layer, a stable and well-ordered flow can develop intense and sporadic bursts ...

We present results from direct numerical simulations of the Boussinesq equations in the presence of rotation and/or stratification, both in the vertical direction. The runs are forced isotropically and randomly at small ...

Long-lived magnetic fields are known to exist in upper main-sequence stars, white dwarfs, and neutron stars. In order to explore possible equilibrium configurations of the magnetic field inside these stars, we have performed ...

We present a reduced system of seven ordinary differential equations that captures the time evolution of spatial gradients of the velocity and the temperature in fluid elements of stratified turbulent flows. We show the ...

A numerical study of decaying stably stratified flows is performed. Relatively high stratification (Froude number ≈10 −2 - 10 −1 ) and moderate Reynolds (Re) numbers (Re≈ 3 -6 ×10 3) are considered and a particular emphasis ...