Effect of boundary on the two-dimensional inclined channel for a dilute granular flow distribution

We have investigated experimentally the two-dimensional flow of stainless steel balls through a smooth inclined plane and between two parallel plates so that the side walls are rough and the inclination is adjustable. It is shown that the dynamical behaviour of the dilute granular flow is different from the Newtonian fluids because of the energy dissipation. Compared to the viscous fluids, the velocity profiles of the granular flow are more blunted than the parabolic form and the density profiles are nonuniform. Near the side walls, the density is higher than the center of the channel. The distribution of the density is influenced by increasing inclination and the width of the channel. The transverse distribution of the granules in the channel is affected chiefly by the density distribution.