Rising and sinking intruders in dense granular flows
Lü Jing, Julio M. Ottino, Richard M. Lueptow, Paul B. Umbanhowar
Abstract
The force driving intruder particles to rise or sink in dense granular beds is shown to obey a general scaling law that is reminiscent of Archimedes' buoyancy, but with additional dependence on the intruder to bed particle size ratio. Predictions match observations of rise-sink behavior over a wide range of flow conditions in various numerical and experimental flow configurations.
Topics & Concepts
BuoyancySink (geography)MechanicsScalingScaling lawFlow (mathematics)Range (aeronautics)Granular materialPhysicsNeutral buoyancyGeologyStatistical physicsClassical mechanicsMaterials scienceGeotechnical engineeringGeometryMathematicsGeographyCartographyComposite materialGranular flow and fluidized bedsLandslides and related hazardsParticle Dynamics in Fluid Flows