5 citations · 6 across the 6 of their papers we have counts for
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Vortex shedding patterns, their competition, and chaos in flow past inline oscillating rectangular cylinders
Srikanth Toppaladoddi, Harish N Dixit, Rao Tatavarti +1
The flow past inline oscillating rectangular cylinders is studied numerically at a Reynolds number representative of two-dimensional flow. A symmetric mode, known as S-II, consisti…
Linear and Secondary Instabilities in Incompressible Axisymmetric Boundary Layers: Effect of Transverse Curvature
N. Vinod, Rama Govindarajan
The incompressible boundary layer in the axial flow past a cylinder has been shown Tutty et. al.(\cite{tutty}) to be stabler than a two-dimensional boundary layer, with the helical…
Gravity-free hydraulic jumps and metal femtocups
Rama Govindarajan, Manikandan Mathur, Ratul DasGupta +3
Hydraulic jumps created by gravity are seen every day in the kitchen sink. We show that at small scales a circular hydraulic jump can be created in the absence of gravity, by surfa…
The critical Reynolds number of a laminar mixing layer
Pinaki Bhattacharya, M. P. Manoharan, Rama Govindarajan +1
It has hitherto been widely considered that a mixing layer is unstable at all Reynolds numbers. However this is untenable from energy considerations, which demand that there must e…
Preventing transition to turbulence: a viscosity stratification does not always help
Vijayakumar Chikkadi, A. Sameen, Rama Govindarajan
In channel flows a step on the route to turbulence is the formation of streaks, often due to algebraic growth of disturbances. While a variation of viscosity in the gradient direct…
Shell Model for Drag Reduction with Polymer Additive in Homogeneous Turbulence
Roberto Benzi, Elisabetta De Angelis, Rama Govindarajan +1
Recent direct numerical simulations of the FENE-P model of non-Newtonian hydrodynamics revealed that the phenomenon of drag reduction by polymer additives exists (albeit in reduced…