Collisions of a Lennard-Jones particle comprised of 1055 molecules onto a weakly attractive rigid surface are numerically investigated using the molecular dynamics simulation. Diverse energy exchanges such as the kinetic energy transfer into deformation and rotational energy, heat dissipation, and the recovery of the kinetic energy show that their routes are distinguished by the collision velocity. At lower collision velocities, large part of the lost energy is converted into the particle rotational energy. At higher collision velocities, however, greater part of the incident kinetic energy is consumed into the particle potential and thermal energy while solid-to-solid phase transition occurs. Adhesion probability is greater than 0.5 when the Weber number before or after the collision is less than unity, but drops lower in intermediate collision velocity range in which the collision transits from elastic to plastic regime. Thermal rebound was not observed in this particle size.
All Science Journal Classification (ASJC) codes
- Environmental Engineering
- Mechanical Engineering
- Fluid Flow and Transfer Processes
- Atmospheric Science