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 …

The statistics of the alignment of axisymmetric microscopic particles in fully developed
turbulent flow is studied numerically and theoretically. Direct numerical simulations (DNS) of …

We experimentally investigate the effect of geometrical anisotropy for buoyant spheroidal
particles rising in a still fluid. All other parameters, such as the Galileo number (the ratio of …

Tracking the three-dimensional rotation of colloidal particles is essential to elucidate many
open questions, eg concerning the contact interactions between particles under flow, or the …

We introduce a new method to measure Lagrangian vorticity and the rotational dynamics of
anisotropic particles in a turbulent fluid flow. We use 3D printing technology to fabricate …

The motion of a large, neutrally buoyant, particle freely advected by a turbulent flow is
determined experimentally. We demonstrate that both the translational and angular …

We report a novel experimental technique that measures simultaneously in three
dimensions the trajectories, the translation and the rotation of finite-size inertial particles …

Heavy particles sink straight in water, while buoyant bubbles and spheres may zigzag or
spiral as they rise. The precise conditions that trigger such path-instabilities are still not …

This article describes a stereoscopic multi-camera calibration method that does not require
any optical model. It is based on a measure of the light propagation within the measurement …

We report experimental measurements of the translational and rotational dynamics of a
large buoyant sphere in isotropic turbulence. We introduce an efficient method to …