Molecular Dynamics-Continuum Hybrid Simulation for the Impingement of Droplet on a Liquid Film

WJ Zhou and ZQ Yu and ZZ Li and YL He and WQ Tao, NUMERICAL HEAT TRANSFER PART A-APPLICATIONS, 68, 512-525 (2015).

DOI: 10.1080/10407782.2014.986403

A molecular dynamics-continuum hybrid method is used to study the droplet impingement process on a liquid film. The hybrid code is validated by simulating the sudden-start Couette flow and unsteady heat transfer problem. The impingement process is strongly affected by Weber number. At low Weber number, the evolution of the crown after droplet impingement is stable, while at high Weber number the secondary droplets emerge and the splash phenomenon occurs. The effect of liquid film thickness on the evolution of crown diameter is also investigated.

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