The transmission dynamics of highly contagious respiratory diseases like COVID-19
(through coughing/sneezing) is an open problem in the epidemiological studies of such …

The Maxey–Riley equation has been extensively used by the fluid dynamics community to
study the dynamics of small inertial particles in fluid flow. However, most often, the Basset …

We investigate the effect of inertial particles on the stability and decay of a prototypical vortex
tube, represented by a two-dimensional Lamb–Oseen vortex. In the absence of particles, the …

We study the role of phase change and thermal noise in particle transport in turbulent flows.
We employ a toy model to extract the main physics: Condensing droplets are modelled as …

Sessile hydrogel drops on rigid surfaces exhibit a wetting/contact morphology intermediate
between liquid drops and glass spheres. Using density functional theory, we reveal the …

We advance the understanding of inertial clustering and the role of sling events in high-
Reynolds number (Re) particle-laden turbulence. To this end, we perform one-way coupled …

This article describes the dynamics of small inertial particles centrifuging out of a single
vortex. It shows the importance of caustics formation in the vicinity of a single vortex: both for …

When heavy particles in turbulent flow are centrifuged out of vortices they cluster to form
singular features in the number density [Phys Fluids 27, 033305 (2015)], termed caustics for …

Caustics are singularities that occur naturally in optical, hydrodynamic, and quantum waves,
giving rise to high-amplitude patterns that can be described using catastrophe theory. In this …

We investigate the role of intense vortical structures, similar to those in a turbulent flow, in
enhancing collisions (and coalescences) which lead to the formation of large aggregates in …