title: Transport of resistance through a long microfluidic channel.
abstract: We introduce a continuous analytical model of propagation of resistance in pressure-driven flow of two-phase fluid in a single channel. This model can be used to predict and interpret experimental results in droplet microfluidics where the hydrodynamic resistance of a capillary comprises a constant part, specific to the channel and the viscosity of the continuous fluid, and a variable part, related to the presence and distribution of droplets. The continuous model is a convenient generalization of the discrete models as demonstrated via comparisons with discrete simulations and with experiments.
authors.affiliation: Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland. cybulski@ichf.edu.pl
authors.forename: Olgierd
authors.initials: O
authors.lastname: Cybulski
authors.forename: Piotr
authors.initials: P
authors.lastname: Garstecki