3 papers
physics.flu-dyn2022
Anomalous dispersion of microswimmer populations
Laxminarsimharao Vennamneni, Piyush Garg, Ganesh Subramanian
We examine the longitudinal dispersion of spheroidal microswimmers in pressure-driven channel flow. When time scales corresponding to swimmer orientation relaxation, and diffusion…
physics.flu-dyn2019
Shear induced migration of microswimmers in pressure-driven channel flow
LaxminarsimhaRao V., Sankalp Nambiar, Ganesh Subramanian
We study the shear induced migration of microswimmers (primarily, active Brownian particles or ABP's) in a plane Poiseuille flow. For wide channels characterized by $U_b/HD_r \ll 1…
physics.flu-dyn2018
Concentration banding instability of a sheared bacterial suspension
Laxminarsimharao V, Piyush Garg, Ganesh Subramanian
We demonstrate a novel shear-induced mechanism for growth of concentration fluctuations in a bacterial suspension. Using a linear stability analysis, a homogeneously sheared suspen…