An improved multiscale Eulerian–Lagrangian method for simulation of atomization process

•A multi-scale numerical resolution of the assisted atomization of a liquid sheet is proposed.•The approach involves a Level-Set/VOF, AMR and a Lagrangian point particle tracking.•An advanced treatment of the Euler-Lagrange transition is proposed.•The reversal Lagrange–Euler transition (droplet impact) is proposed as well.•An assisted atomization test case is proposed with analysis of the droplets size.