2005/09/05 by Robert C. Brewster, Robert Brewster, Gary S. Grest +2 · 1 citation
Engineering · Environmental Science · Mathematics · Physics and Astronomy · #Classical mechanics #Constitutive equation #Dissipation #Finite element method #Flow (mathematics) #Geology #Geometry #Geotechnical engineering #Granular flow and fluidized beds #Granular material #Inclined plane #Landslides and related hazards #Mathematics #Mechanics #Particle Dynamics in Fluid Flows #Physics #Scaling #Thermodynamics #cond-mat.soft
paper · pdf · doi:10.1103/physreve.72.061301
8 pages, 10 figures
arxiv created 2005/09/05 · openalex publication_date 2005/12/21 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Cohesive granular media flowing down an inclined plane are studied by discrete element simulations. Previous work on cohesionless granular media demonstrated that within the steady flow regime where gravitational energy is balanced by dissipation arising from intergrain forces, the velocity profile in the flow direction scales with depth in a manner consistent with the predictions of Bagnold. Here we demonstrate that this Bagnold scaling does not hold for the analogous steady flows in cohesive granular media. We develop a generalization of the Bagnold constitutive relation to account for our observation and speculate as to the underlying physical mechanisms responsible for the different constitutive laws for cohesive and noncohesive granular media.