We study the three-dimensional turbulent Kolmogorov flow, i. e. the Navier-Stokes equations forced by a low-single-wave-number sinusoidal force in a periodic domain, by means of direct numerical simulations.
Fluid Dynamics Computational Physics
We propose a boundary-layer model and a buoyancy-intensity model which account for the main features of the ice morphology.
Fluid Dynamics Geophysics
We successfully perform the three-dimensional tracking in a turbulent fluid flow of small asymmetrical particles that are neutrally-buoyant and bottom-heavy, i. e., they have a non-homogeneous mass distribution along their symmetry axis.
The settling behaviour of small inertial particles in turbulent convection is a fundamental problem across several disciplines, from geophysics to metallurgy.
Fluid Dynamics Soft Condensed Matter Geophysics
Inertialess anisotropic particles in a Rayleigh-B\'enard turbulent flow show maximal tumbling rates for weakly oblate shapes, in contrast with the universal behaviour observed in developed turbulence where the mean tumbling rate monotonically decreases with the particle aspect ratio.
Fluid Dynamics Soft Condensed Matter