نوع مقاله : مقاله پژوهشی
عنوان مقاله English
نویسندگان English
In this study, the formation and generation of Janus microdroplets in a Y-shaped microchannel were numerically investigated using the Volume of Fluid (VOF) method in ANSYS Fluent. Silicone oil and a 5% polycaprolactone solution were considered as the two dispersed phases, while a 2% polyvinyl alcohol solution was used as the continuous phase. The effects of hydrodynamic parameters, including flow-rate ratio and capillary number, on the droplet formation mechanism, flow regime, process stability, and droplet size uniformity were analyzed. The numerical model was validated using reliable data reported in previous studies, and the results showed good agreement in predicting droplet size, formation pattern, and flow behavior. The simulations demonstrated that, among the different flow-rate scenarios, one optimal condition led to stable droplet formation, a repeatable production cycle, an appropriate dimensional balance between the two halves of the droplet, and minimum dispersion indices (CV and PDI). In addition, increasing the capillary number caused a change in the flow regime and reduced the uniformity and overall quality of the generated droplets.
کلیدواژهها English
