Miles Morgan

Fluid-driven granular flows in silos and channels

Granular flows that are driven by fluids occur in a multitude of important natural and industrial settings and yet they are not fully understood. These complex flows involve hydrodynamic forces on particles in addition to frictional grain-grain interaction. Coupled with varying grain properties, resulting flows can exhibit spatial heterogeneity and time dependence involving processes such as dilation, compaction, erosion, deposition and segregation. This talk will discuss experimental work with submerged silo and channel flows that exhibit phenomena exclusive to fluid-driven granular systems. The work forms the basis of a fellowship project aiming to bring together experiment, simulation, and theory to broaden our understanding of fluid-driven systems.