Effect of geometry on droplet formation in the squeezing regime in a microfluidic T-junction

摘要: In the surface tension-dominated microchannel T-junction, droplets can be formed as a result of mixing two dissimilar, immiscible fluids. This article presents results for very low Capillary numbers and different flow rates continuous dispersed phases. Through three-dimensional lattice Boltzmann-based simulations, mechanism formation “plugs” in squeezing regime has been examined size quantified. Results $$ Re_{\text{c}} \ll 1$$ show dependence fluids on length formed, which is compared with existing experimental data. It shown that plugs decreases number increases regime. clearly shows geometry effect, i.e., widths channels depth assembly, plays an important role determination plugs, fact was ignored earlier correlations.