Molecular Dynamics Analysis on Elementary Process of Coating by High-Temperature and High-Speed Droplet (Flattening Process and Atomic Behavior of Droplet)

Jun SHIMIZU, Etsuji OHMURA, Yoshifumi KOBAYASHI, Shoichi KIYOSHIMA, Hiroshi EDA
2005 Transactions of the Japan Society of Mechanical Engineers Series C  
In order to clarify the flattening process of the high-temperature and high-speed droplet due to its impact on the substrate in an atomic level, a three-dimensional molecular dynamics simulation was conducted. The droplet and the substrate were assumed to consist of pure aluminum, and Morse potential was postulated between a pair of aluminum atoms. By visualizing the analytical result, the processes of melting and solidification, temperature distribution, deformation velocity and potential
more » ... y of atoms of the droplet were clarified. As a result, following conclusions were obtained : ( 1) The transfer of the droplet atoms to the horizontal direction in flattening process increases in proportion to the horizontal distance from the central axis of the droplet. ( 2 ) The solidification of the droplet starts from the outside edge of the droplet, and finishes as the flattening ratio increases.
doi:10.1299/kikaic.71.298 fatcat:k54h3t26kzejrpl5fomfg7dy2e