Erosion and Deposition of Particles in a Periodic Forced Flow - Selected Topics of Computational and Experimental Fluid Mechanics - page 431

Fig. 4 Distribution of sand in the system after 18h of forcing. The channel width is 5 cm and the
driving period is 12.5 s. The trough in front of the channel has a approximately a length two times H
Fig. 5 Accumulation of particles after over 5,200 forcing periods. The channel width is 5 cm. There
are two regions around the symmetry axis where particles deposit
4 Conclusions
In this paper we have shown some experimental results on the motion of particles in
a periodic forced flow. We observe the formation of a trough in front of the channel,
in agreement with data reported in previous papers. On the other hand, the particles
inside and near the channel are subject to larger velocity gradients although the overall
displacement is small. The final result is that these particles do not move away and