Dust Dispersion by Shock Waves: An Eulerian-Lagrangian Study*

A clear understanding of the mechanism of dust lifting from the ground is necessary to study dust dispersion in explosions and other industrial processes. The mechanism of dust dispersion is affected by various parameters such as the shock strength, the curvature of shock bending near the particle surface, and the vortices or flow disturbances generated in the vicinity of the bed through back coupling. High-fidelity simulations can provide a clearer understanding of the primary contributors to dust dispersion. In this talk, we investigate the general phenomenology of dust dispersion behind a traveling shock wave using the Eulerian-Lagrangian modules appended to the compressible FLASH solver. The study will address gas-particle, particle-gas, and particle-particle interactions critical in the complex multiphase system through surrogate models to estimate the relative importance of these interactions.