Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamics of particle sedimentation in viscoelastic fluids: A numerical
  study on particle chain in two-dimensional narrow channel   In this article we present a numerical method for simulating the
sedimentation of circular particles in two-dimensional channel filled with a
viscoelastic fluid of FENE-CR type, which is generalized from a
domain/distributed Lagrange multiplier method with a factorization approach for
Oldroyd-B fluids developed in [J. Non-Newtonian Fluid Mech. 156 (2009) 95].
Numerical results suggest that the polymer extension limit L for the FENE-CR
fluid has no effect on the final formation of vertical chain for the cases of
two disks and three disks in two-dimensional narrow channel, at least for the
values of L considered in this article; but the intermediate dynamics of
particle interaction before having a vertical chain can be different for the
smaller values of L when increasing the relaxation time. For the cases of six
particles sedimenting in FENE-CR type viscoelastic fluid, the formation of
chain of 4 to 6 disks does depend on the polymer extension limit L. For the
smaller values of L, FENE-CR type viscoelastic fluid can not bring them
together like the case of these particles settling in a vertical chain
formation in Oldroyd-B fluid; but two separated chains of three disks are
formed. Similar results for the case of ten disks are also obtained. The
numerical results of several more particle cases suggest that for smaller
values of L, the length of the vertical chain is shorter and the size of
cluster is smaller.

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The categories of this paper are: math-ph
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The categories of this paper are: stat
1
The categories of this paper are: cs
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The categories of this paper are: chem-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-fin
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The categories of this paper are: q-bio
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The categories of this paper are: bayes-an
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The categories of this paper are: econ
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The categories of this paper are: supr-con
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The categories of this paper are: funct-an
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The categories of this paper are: solv-int
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-lat
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The categories of this paper are: math
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The categories of this paper are: comp-gas