Designing on-chip microfluidic pumps requires that the dependence of pressure drop across the device on the fluid flow rate be known. This relationship can be complicated for the case of two-phase droplet type flows. We characterized the flow-pressure relationship for the single-file flow of water drops in oil in microfluidic channels of rectangular cross sections. The pressure for such droplet...

Particle collision is an important process in soot particle growth. In this research, based on gas-solid two-phase flow, trajectory was traced by the Lagrange approach with periodic boundaries. Trajectory intersection, probability, and critical velocity were considered, growth path of each traced. The frequency, fc, agglomeration fa, friction ffc, calculated, main influence factors analyzed. re...