For passive sheathless particles focusing in microfluidics, the equilibrium positions of
particles are typically controlled by micro channels with a V-shaped obstacle array (VOA).
The design of the obstacles is mainly based on the distribution of flow streamlines without
considering the existence of particles. We report an experimentally verified particle trajectory
simulation using the arbitrary Lagrangian-Eulerian (ALE) fluid-particle interaction method.
The particle trajectory which is strongly influenced by the interaction between the particle …