Double droplet splashing on a thin liquid film with a pseudopotential lattice Boltzmann method

This paper studies the interaction of two droplets splashing on a stationary film. A source term is included in large-density-ratio pseudopotential lattice Boltzmann method to achieve tuneable surface tension. model offers excellent numerical accuracy and stability for droplet impacts liquid films. The influence Reynolds number, Weber film thickness, horizontal/vertical distance between crown geometry evolution investigated. energy loss during impact process velocity discontinuity are key factors affecting crown. smaller number or thicker enhances decreases discontinuity, leading more stable side central jets. An increase horizontal reduces causing jet height decrease. does not affect but lower tension leads dramatic deformation both vertical causes an asymmetrical geometry, postpones breakup time .