Simulation of solid particles behaviour in a driven cavity flow

The paper focuses on simulation of driven flow in a cavity containing an incompressible fluid and solid particles. The particle phase was modelled using the Eulerian–Lagrangian (E–L) approach where the solid particles are treated as points moving in the computational domain as a result of the fluid motion. In the mathematical model, the particle–particle interactions are simulated using the hard-sphere model. Different cases were considered, where the Reynolds number of the flow (defined by the velocity of the moving boundary, size of the cavity and fluid viscosity) and particle momentum response time were varied. This issue has various applications, for instance in pneumatic transport of dusts. The results are shown as snapshots of particle location at specific points in time, as well as statistics to characterize the behaviour in the dust cloud. The two-way coupling was considered making it possible to determine the influence of the particle cloud on the fluid phase in a driven cavity flow.