Nano-Droplet Impact on a Homogenous Surface Using Molecular Dynamics

Impact of argon nano-droplet on homogeneous platinum wall is simulated using molecular dynamics. Wall temperature (90 K, 300 K) and surface wettability (high, low based on ε_Ar–Pt parameter) are varied to study four cases. An external force is applied on the drop for a short time period to achieve velocities in the range of 13 m/s – 15 m/s. Interface markers, interfacial fit and contact angles are evaluated. Complete spreading is obtained on the high wettable surface, whereas drop oscillations are seen for the low wettable surface for wall temperatures of 90 K. Liedenfrost effect is observed for wall temperature of 300 K for both cases of surface wettability.