Collapse dynamics of two-dimensional dry and immersed granular columns of elongated grains
Nathan Coppin, Michel Henry, Miguel Cabrera, Émilien Azéma, Frédéric Dubois, Vincent Legat, Jonathan Lambrechts
Abstract
The collapse of a granular column is a benchmark case for the study of granular materials. In this work, the collapse dynamics of two-dimensional columns of elongated grains are numerically investigated in dry and immersed conditions. The focus is set on the orientation of the grains and its influence on the behavior of the column. An energy-based approach suggests the influence of grain shape on mobility is limited to the prefactor of a power-law.
Topics & Concepts
Granular materialWork (physics)Power lawMechanicsColumn (typography)Dynamics (music)Benchmark (surveying)Materials scienceStatistical physicsPhysicsGeometryMathematicsGeologyThermodynamicsComposite materialGeodesyAcousticsConnection (principal bundle)StatisticsGranular flow and fluidized bedsLandslides and related hazardsFluid Dynamics Simulations and Interactions