The Lagrangian description of turbulence is characterized by a unique conceptual simplicity
and by an immediate connection with the physics of dispersion and mixing. In this article, we …

Fluid dynamics turbulence refers to the chaotic and unpredictable dynamics of flows.
Despite the fact that the equations governing the motion of fluids are known since more than …

Multi-scale systems, involving complex interacting processes that occur over a range of
temporal and spatial scales, are present in a broad range of disciplines. Several …

Lagrangian acceleration statistics in a fully developed turbulent channel flow at Re τ= 1440
are investigated, based on tracer particle tracking in experiments and direct numerical …

We present the results of direct numerical simulations (DNS) of turbulent flows seeded with
millions of passive inertial particles. The maximum Reynolds number is Re λ∼ 200. We …

We present high-resolution direct numerical simulations of turbulent three-dimensional
Rayleigh-Bénard convection with a focus on the Lagrangian properties of the flow. The …

Particles in turbulence frequently encounter extreme accelerations between extended
periods of quiescence. The occurrence of extreme events is closely related to the intermittent …

We study the Lagrangian velocity and acceleration statistics of light particles (micro-bubbles
in water) in homogeneous isotropic turbulence. Micro-bubbles with a diameter db= 340 μm …

Lagrangian statistics and pair dispersion induced by an isolated pulse of a small jellyfish,
Aurelia aurita, were quantified and characterized using 3D particle tracking velocimetry (3D …

The dispersion and mixing of passive particles in a turbulent channel flow are investigated
by means of a network-based representation of their motion. We employ direct numerical …