3 papers
physics.flu-dyn2026
Orientation dynamics of a settling spheroid in simple shear flow: bifurcations and stochastic alignment
Himanshu Mishra, Anubhab Roy
We investigate the orientation dynamics of a settling spheroid in simple shear flow, combining a deterministic dynamical-systems analysis with a stochastic Fokker-Planck treatment.…
physics.flu-dyn2026
Evidence of an inertialess Kapitza instability due to viscosity stratification
Shravya Gundavarapu, Darish Jeswin Dhas, Anubhab Roy
The classical Kapitza instability of a gravity-driven falling film requires finite inertia to operate. We show that a surface-mode instability can arise in the complete absence of…
physics.flu-dyn2024
The flow field due to a sphere moving in a viscous, density stratified fluid
Ramana Patibandla, Anubhab Roy, Ganesh Subramanian
We study the flow field induced by a sphere translating in a viscous density-stratified ambient, specifically, in the limit of small Reynolds , and viscous Ri…