Granular Matter

, Volume 16, Issue 4, pp 509–515

Shear dispersion in dense granular flows

Original Paper

DOI: 10.1007/s10035-014-0498-0

Cite this article as:
Christov, I.C. & Stone, H.A. Granular Matter (2014) 16: 509. doi:10.1007/s10035-014-0498-0

Abstract

We formulate and solve a model problem of dispersion of dense granular materials in rapid shear flow down an incline. The effective dispersivity of the depth-averaged concentration of the dispersing powder is shown to vary as the Péclet number squared, as in classical Taylor–Aris dispersion of molecular solutes. An extension to generic shear profiles is presented, and possible applications to industrial and geological granular flows are noted.

Keywords

Taylor–Aris dispersionRapid granular flowBagnold profileGranular diffusion

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Department of Mechanical and Aerospace EngineeringPrinceton UniversityPrincetonUSA
  2. 2.Theoretical Division and Center for Nonlinear StudiesLos Alamos National LaboratoryLos AlamosUSA