An Eulerian-Lagrangian model for dense particle clouds

The interaction of a shock wave with a layer of particles, a topic important for the formation of dust clouds in air, has been analyzed by numerical simulation. The modelling method used are the Eulerian-Lagrangian and the Eulerian-Eulerian approaches, the latter is traditionally used for this type of simulation. Using Eulerian-Lagrangian simulation, it has been possible to include the effects of particle-particle and particle-wall collisions in a realistic and direct manner. Results are mainly shown as snap-shots of particle positions during the simulations and statistics for the particle displacement and collisions. The results show that collisions influence the process of particle cloud formation significantly.