1. Saltation of fine particles on obliquely oscillating plate
- Author
-
Murino Kobayakawa, Shuji Matsusaka, and Masatoshi Yasuda
- Subjects
Physics ,Quantitative Biology::Tissues and Organs ,General Medicine ,Mechanics ,fluid resistance ,Impulse (physics) ,Collision ,Restitution ,Condensed Matter::Soft Condensed Matter ,Drag ,oblique oscillation ,restitution ,Saltation (geology) ,particle saltation ,fine particle ,Engineering(all) - Abstract
The saltation of fine particles on an obliquely oscillating plate was simulated using a mass-point model that considered the gravity, fluid resistance, restitution, and friction. To examine the effects of the restitution and fluid resistance on the horizontal transport velocity, the two-dimensional movements of three particles with different coefficients of restitution and diameters were calculated. The results showed that a particle with a higher restitution and smaller diameter had a smaller transport velocity. This can be explained as follows. A particle with a higher restitution bounces forward and backward repeatedly, whereas a particle with a lower restitution only bounces forward, because the higher bounce height increases the impulse exerted on the particle during a collision, which induces a drastic change in the horizontal velocity from the collision. The horizontal velocity of a smaller particle is decreased by the drag force during its flight between successive collisions., New Paradigm of Particle Science and Technology Proceedings of The 7th World Congress on Particle Technology
- Published
- 2015