Abstract
The behavior of flows including dense solid particles is complex especially in near-wall regions due to existence of interactions between particles, particle-wall and particle-fluid. Due to the difficulty of experimental observations, the effect of a wall is not known well at present. In the present study, new boundary condition on a flow field including dense moving particles is proposed and the influence of solid wall on a flow field including dense moving particles is investigated in detail by means of microscopic direct numerical simulation. It is confirmed that the wall gives influence both on the particle arrangement and fluid velocity distribution close to the wall.
