(535f) Continuous Droplet-Based Viscometer
AIChE Annual Meeting
Wednesday, November 16, 2016 - 1:45pm to 2:00pm
Theoretical analysis was conducted to predict the droplet size and verify the experimentally found linear relationship. The theoretical analysis is based on the mechanism for flow-rate controlled breakup proposed by Garstecki et al. in a T-junction geometry. They found that the droplet length is linearly proportional to the ratio of the dispersed-phase to continuous-phase flow rate. We combined this relationship with a pressure balance between the applied pressure and the pressure drop from the inlet to the outlet of the device to derive the flow rate ratio. The resulting equations can successfully predict droplet lengths and verify the linear relationship between Âµaq and 1/(Ld â?? Lc). The equations can also be applied to optimize the device geometry (i.e., channel widths, depths and lengths).