COMPUTATIONAL MODELING OF DENSE SPRAY FORMATION VIA EULERIAN-LAGRANGIAN TRANSITION

This work presents a numerical CFD framework to simulate the atomization of a coaxial liquid jet (acetone/air). The methodology focuses on the hybrid coupling of the VOF (Volume of Fluid) and DPM (Discrete Phase Model) methods to model everything from the primary breakup to spray formation. Herrmann’s criterion was employed for the Euler-Lagrange conversion, along with two-way coupling and the LES turbulence model. Aiming for computational optimization, a dynamic mesh refinement strategy based on the VOF field and vorticity was applied. The results demonstrate the effectiveness of the approach in capturing the jet instability phenomenology and droplet dispersion, establishing a solid foundation for the future inclusion of combustion reactions.