Particle Filtration in Suspension Droplet Breakup

This paper presents an experimental study on drop formation of suspension prepared with moderately viscous liquid and non-colloidal spherical particles. We study the dynamics of successive droplet formation to understand the particle size effects for different particle volume fractions. We show that the droplet breakup length increases with increase in the particle volume fraction and if the particle size is comparable to the filament thickness, the axisymmetric breakup structure is modified to an asymmetric drop breakup. The retraction of the filament as well as the de-stabilization of the filament leading to quick breakup strongly depend on the particle size.