25 citations · 59 across the 9 of their papers we have counts for
9 papers
Waves in a shear flow: transition between the KH, Holmboe and Miles instability
Anil Kumar, S. Ravichandran, Ratul Dasgupta
We investigate shear driven wave generation at the interface between two immiscible fluids, using an exponential velocity profile with a sharp density interface representing stable…
Benchmarking Turbulence Models to Represent Cloud-Edge Mixing
Johannes Kainz, Nikitabahen N. Makwana, Bipin Kumar +5
Considering turbulence is crucial to understanding clouds. However, covering all scales involved in the turbulent mixing of clouds with their environment is computationally challen…
Instability driven by settling and evaporation in a shear flow: a model for asperitas clouds
S. Ravichandran, Rama Govindarajan
We study, by direct numerical simulations in two and three dimensions, the instability caused by the settling and evaporation of water droplets out of a cloudy layer saturated with…
The combined effects of buoyancy, rotation, and shear on phase boundary evolution
S. Ravichandran, S. Toppaladoddi, J. S. Wettlaufer
We use well-resolved numerical simulations to study the combined effects of buoyancy, pressure-driven shear and rotation on the melt rate and morphology of a layer of pure solid ov…
Virus transmission by aerosol transport during short conversations
Rohit Singhal, S. Ravichandran, Rama Govindarajan +1
Pathogens like the SARS-CoV-2 are transmitted not only through violent expiratory events like coughing, but also through routine activities like breathing/speaking/singing. We perf…
Fluid dynamics in clouds: The sum of its parts
S. Ravichandran, Jason R. Picardo, Samriddhi Sankar Ray +1
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 r…
Melting driven by rotating Rayleigh-Bénard convection
S. Ravichandran, J. S. Wettlaufer
We study numerically the melting of a horizontal layer of a pure solid above a convecting layer of its fluid rotating about the vertical axis. In the rotating regime studied here,…
Transient Convective Spin-up Dynamics
S. Ravichandran, J. S. Wettlaufer
We study the formation, longevity and breakdown of convective rings during impulsive spin-up in square and cylindrical containers using direct numerical simulations. The rings, whi…
Large Scale Extinction Maps with UVIT
S. Ravichandran, Preethi Krishnamoorthy, Margarita Safonova +1
The Ultraviolet Imaging Telescope (UVIT) is scheduled to be launched as a part of the ASTROSAT satellite. As part of the mission planning for the instrument we have studied the eff…