(25c) Simulation of Drying of Droplets and Its Effect on Particle's Morphology in Spray-Drying
AIChE Annual Meeting
Monday, November 16, 2020 - 8:30am to 8:45am
The drying dynamics affect the internal flow patterns within a droplet in spray-drying. The flow patterns are dominated by surface tension and evaporative effects which ultimately disperse the suspended particles in the droplet and finally determine the final product morphology. In the presented work, the drying and internal transport of insoluble particles within a droplet were simulated using a volume of fluid method coupled with a Lagrangian solver for tracking particle movement. The simulations were performed within the open-source framework, OpenFOAM. The solver has been heavily modified to include interfacial mass transfer by employing a coupled Eulerian-Lagrangian framework capable of simulating drying of a droplet and the solid particles suspended inside. Modeling dropletâs internal flow created through evaporative effects, and tracking movement of solid particles, drying and the morphological evolution of the product is simulated and analyzed.