In the previous study, different structures of hoppers were proposed. And dust suppression performance evaluated. this paper, materials selected.And influence material on particle behaviors studied based discrete element method (DEM). Results shows that wall with low collision recovery coefficient for hopper has positive effect suppressing diffusion.and high static friction showed little flow s...

The N otre Dame A rm y ROTC b a tta lio n trudged through the woods and slept unde r the stars th is past weekend w h ile conducting their semi-annual field tra in ­ ing exercise. The field training, or FTX, is a m il i ta ry tra in in g event intended to prepare jun io rs fo r a leade rsh ip camp the summer before senior year. Over 80 cadets — freshman through juniors — and senior staff left N...