Understanding transmission dynamics of COVID-19-type infections by direct numerical simulations of cough/sneeze flows

SS Diwan, S Ravichandran, R Govindarajan… - Transactions of the …, 2020 - Springer
The transmission dynamics of highly contagious respiratory diseases like COVID-19
(through coughing/sneezing) is an open problem in the epidemiological studies of such …

Effect of long-range Coulomb repulsion on adhesive particle agglomeration in homogeneous isotropic turbulence

X Ruan, S Chen, S Li - Journal of Fluid Mechanics, 2021 - cambridge.org
We conduct numerical investigations on the early-stage agglomeration of identically
charged microparticles in homogeneous isotropic turbulence. The turbulent flow field is …

Flow structures govern particle collisions in turbulence

JR Picardo, L Agasthya, R Govindarajan, SS Ray - Physical Review Fluids, 2019 - APS
The role of the spatial structure of a turbulent flow in enhancing particle collision rates in
suspensions is an open question. We show and quantify, as a function of particle inertia, the …

Waltz of tiny droplets and the flow they live in

S Ravichandran, R Govindarajan - Physical Review Fluids, 2022 - APS
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 …

Optimization of DNS code and visualization of entrainment and mixing phenomena at cloud edges

B Kumar, M Rehme, N Suresh, N Cherukuru… - Parallel Computing, 2021 - Elsevier
Entrainment and mixing processes occur during the entire life of a cloud. These processes
change the droplet size distribution, which determines rain formation and radiative …

Fluid Dynamics in Clouds

S Ravichandran, JR Picardo, SS Ray… - Bulbul Chakraborty, 2022 - Springer
This entry is aimed at describing cloud physics with an emphasis on fluid dynamics. As is
inevitable for a review of an enormously complicated problem, it is highly selective and …

Fluid dynamics in clouds: The sum of its parts

S Ravichandran, JR Picardo, SS Ray… - Statistical and Nonlinear …, 2022 - Springer
This entry is aimed at describing cloud physics with an emphasis on fluid dynamics. As is
inevitable for a review of an enormously complicated problem, it is highly selective and …