Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A collocated immersed boundary method for particle-resolved simulations
  of polydispersed, particle-laden flows   We present a collocated-grid method for Direct Numerical Simulations of
polydisperse particles submerged in a viscous fluid. The fluid-particle forces
are coupled with the Immersed Boundary Method (IBM) while the particle-particle
forces are modeled with a combination of contact and lubrication models. Our
method is modified from the staggered-grid IBM of previous authors to a
collocated-grid IBM by adapting the fluid and particle solvers. The method is
shown to be second-order accurate in space and scales well on high-performance
parallel computing platforms. It has been validated against various cases and
is able to reproduce experimental results. Tuning parameters have been
thoroughly calibrated to ensure method accuracy. Finally, we demonstrate the
capability of the method to simulate a fluidized bed and reproduce the power
law relationship between the inflow velocity and the porosity.

32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol