抄録
Coarse particle behavior in a laterally vibrated vessel under microgravity was experimentally studied. The vibration was under the conditions of a frequency of 75-150Hz and a displacement amplitude of 86-310μm. The 2-dimensional displacement distribution of particles which moves 3-dimensionally was measured by particle image sampling within the depth of field. It was found that the distribution was of a saddle shape in which concentration was high at the center of the lateral direction and the ends of the longitudinal direction. The tendency became distinct with increasing total particle concentration. The round-shape corners of the vessel homogenized the distribution due to enhanced circulation. It was also found that particle concentration increased with the velocity amplitude.
