50 citations · 60 across the 5 of their papers we have counts for
5 papers
Energy spectra of buoyancy-driven bubbly flow in a vertical Hele-Shaw cell
Rashmi Ramadugu, Vikash Pandey, Prasad Perlekar
We present direct numerical simulations (DNS) study of confined buoyancy-driven bubbly flows in a Hele-Shaw setup. We investigate the spectral properties of the flow and make compa…
Ephemeral Antibubbles: Spatiotemporal Evolution from Direct Numerical Simulations
Nairita Pal, Rashmi Ramadugu, Prasad Perlekar +1
Antibubbles, which consist of a shell of a low-density fluid inside a high-density fluid, have several promising applications. We show, via extensive direct numerical simulations (…
Surface tension as the destabiliser of a vortical interface
Rashmi Ramadugu, Prasad Perlekar, Rama Govindarajan
We study the dynamics of an initially flat interface between two immiscible fluids, with a vortex situated on it. We show how surface tension causes vorticity generation at a gener…
Liquid velocity fluctuations and energy spectra in three-dimensional buoyancy driven bubbly flows
Vikash Pandey, Rashmi Ramadugu, Prasad Perlekar
We present a direct numerical simulation (DNS) study of pseudo-turbulence in buoyancy driven bubbly flows for a range of Reynolds ($\Rey$) and Atwood ($\At$) numbers. We study the…
Pseudo-turbulence in two-dimensional buoyancy driven bubbly flows: a DNS study
Rashmi Ramadugu, Vikash Pandey, Prasad Perlekar
We present a direct numerical simulation (DNS) study of buoyancy driven bubbly flows in two-dimensions. We employ volume of fluid (VOF) method to track the bubble interface. To inv…