Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Asymmetric concentration dependence of segregation fluxes in granular
  flows   We characterize the local concentration dependence of segregation velocity
and segregation flux in both size and density bidisperse gravity-driven
free-surface granular flows as a function of the particle size ratio and
density ratio, respectively, using discrete element method (DEM) simulations.
For a range of particle size ratios and inlet volume flow rates in
size-bidisperse flows, the maximum segregation flux occurs at a small particle
concentration less than 0.5, which decreases with increasing particle size
ratio. The segregation flux increases up to a size ratio of 2.4 but plateaus
from there to a size ratio of 3. In density bidisperse flows, the segregation
flux is greatest at a heavy particle concentration less than 0.5 which
decreases with increasing particle density ratio. The segregation flux
increases with increasing density ratio for the extent of density ratios
studied, up to 10. We further demonstrate that the simulation results for size
driven segregation are in accord with the predictions of the kinetic sieving
segregation model of Savage and Lun.

20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat