抄録
In gas-solid flows, particles form a spatial structure known as "particle cluster". However, mechanism of the particle clustering is still not known well. In this paper, particle cluster's multi-scale structures are examined in details by applying the high/low-pass filters to flow field data obtained from point-force DNS which takes particle-particle collisions into account. Keywords: Particle clustering, Multi-scale structure, Filters, Gas-solid flows, Direct numerical simulation
