Fluid turbulence is commonly associated with stronger drag, greater heat transfer, and more
efficient mixing than in laminar flows. In many natural and industrial settings, turbulent liquid …

In recent years, several techniques have been introduced that are capable of extracting 3D
three-component velocity fields in fluid flows. Fast-paced developments in both hardware …

Lagrangian turbulence lies at the core of numerous applied and fundamental problems
related to the physics of dispersion and mixing in engineering, biofluids, the atmosphere …

abstract The output from a direct numerical simulation (DNS) of turbulent channel flow at Re
τ≈ 1000 is used to construct a publicly and Web services accessible, spatio-temporal …

Colloidal particles subject to an external periodic forcing exhibit complex collective behavior
and self-assembled patterns. A dispersion of magnetic microparticles confined at the air …

Turbulence is a fundamental and ubiquitous phenomenon in nature, occurring from
astrophysical to biophysical scales. At the same time, it is widely recognized as one of the …

In three-dimensional turbulent flows, the flux of energy from large to small scales breaks time
symmetry. We show here that this irreversibility can be quantified by following the relative …

In a turbulent fluid, the time-reversal symmetry is explicitly broken by viscosity, and
spontaneously broken in the inviscid limit. Recently, Drivas [J. Nonlinear Sci. 29, 65 (2019) …

Time irreversibility is a distinctive feature of non-equilibrium phenomena such as turbulent
flows, where irreversibility is mainly associated with an energy cascade process. The …

We use the mean-bacterial-velocity model to investigate the irreversibility of two-
dimensional (2D) bacterial turbulence and to compare it with its 2D fluid-turbulence …