39 citations · 263 across the 18 of their papers we have counts for
6 papers · 1 filter
Instabilities and turbulence in extensile swimmer suspensions
Purnima Jain, Navdeep Rana, Roberto Benzi +1
We study low Reynolds number turbulence in a suspension of polar, extensile, self-propelled inertial swimmers. We review the bend and splay mechanisms that destabilize an ordered f…
Inertia drives concentration-wave turbulence in swimmer suspensions
Purnima Jain, Navdeep Rana, Sriram Ramaswamy +1
We discover an instability mechanism in suspensions of self-propelled particles that does not involve active stress. Instead, it is driven by a subtle interplay of inertia, swimmer…
Defect Solutions of the Non-reciprocal Cahn-Hilliard Model: Spirals and Targets
Navdeep Rana, Ramin Golestanian
We study the defect solutions of the Non-reciprocal Cahn-Hilliard model (NRCH). We find two kinds of defects, spirals with unit magnitude topological charge, and topologically neut…
Defect turbulence in a dense suspension of polar, active swimmers
Navdeep Rana, Rayan Chatterjee, Sunghan Ro +3
We study the effects of inertia in dense suspensions of polar swimmers. The hydrodynamic velocity field and the polar order parameter field describe the dynamics of the suspension.…
Phase ordering, topological defects, and turbulence in the 3D incompressible Toner-Tu equation
Navdeep Rana, Prasad Perlekar
We investigate phase ordering dynamics of the incompressible Toner-Tu equation in three dimensions. We show that the phase ordering proceeds via defect merger events and the dynami…
Inertia drives a flocking phase transition in viscous active fluids
Rayan Chatterjee, Navdeep Rana, R. Aditi Simha +2
How fast must an oriented collection of extensile swimmers swim to escape the instability of viscous active suspensions? We show that the answer lies in the dimensionless combinati…