5 papers · 1 filter
Longitudinal particle separation
Siluvai Antony Selvan, Rahil N Valani, Brendan Harding +1
Owing to inertial effects, the flow through a three-dimensional curved duct focuses finite-sized spherical particles in the two-dimensional cross-section onto either stable equilib…
A Hamiltonian formulation for the motion of an active spheroidal particle suspended in laminar straight duct flow
Brendan Harding, Rahil N. Valani, Yvonne M. Stokes
We analyse a generalisation of Zöttl and Stark's model of active spherical particles [Phys. Rev. Lett. 108, 218104 (2012)] and prolate spheroidal particles [Eur. Phys. J. E 36(1),…
Active particle motion in Poiseuille flow through rectangular channels
Rahil N. Valani, Brendan Harding, Yvonne M. Stokes
We investigate the dynamics of a point-like active particle suspended in fluid flow through a straight channel. For this particle-fluid system, we derive a constant of motion for a…
Inertial particle focusing in fluid flow through spiral ducts: dynamics, tipping phenomena and particle separation
Rahil N. Valani, Brendan Harding, Yvonne M. Stokes
Small finite-size particles suspended in fluid flow through an enclosed curved duct can focus to points or periodic orbits in the two-dimensional duct cross-section. This particle…
Inertial focusing dynamics of spherical particles in curved microfluidic ducts with a trapezoidal cross-section
Brendan Harding, Yvonne M. Stokes, Rahil N. Valani
Inertial focusing in curved microfluidic ducts exploits the interaction of drag force from the Dean flow with the inertial lift force to separate particles or cells laterally acros…