Collapse of dry and immersed polydisperse granular columns: A unified runout description
Oscar Polanía, Miguel Cabrera, Mathieu Renouf, Émilien Azéma
Abstract
We study granular flows with grains of different sizes (i.e., polydispersity) in the granular column collapse configuration, in both dry and immersed systems with a Discrete Element Method - Finite Element Method (DEM-FEM) model. We show that polydispersity has an stronger effect on immersed cases than in dry cases, and propose a unified model that links the runout with the column collapse energy. Our results contribute a novel perspective in the study of immersed polydisperse flows.
Topics & Concepts
DispersityDiscrete element methodGranular materialFinite element methodMechanicsColumn (typography)Perspective (graphical)Materials scienceMathematicsGeometryPhysicsComposite materialStructural engineeringEngineeringPolymer chemistryConnection (principal bundle)Landslides and related hazardsGranular flow and fluidized bedsHydrology and Sediment Transport Processes