Shear dispersion in dense granular flows
arXiv:1402.6765 · 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 extensions to generic shear profiles is presented, and possible applications to industrial and geological granular flows are noted.
6 pages, 2 figures, Springer svjour3 format; to appear in Granular Matter