Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Creeping flow of micropolar fluid parallel to the axis of cylindrical
  cells with porous layer   The present paper considers the flow of micropolar fluid through a membrane
modeled as a swarm of solid cylindrical particles with porous layer using the
cell model technique. Traditional boundary conditions on hypothetical cell
surface were added with an additional condition: the no spin condition / no
couple stress condition. Expressions for velocity and microrotation vector
components have been obtained analytically. Effect of various parameters such
as particle volume fraction, permeability parameter, micropolarity number etc.
on hydrodynamic permeability of membrane has been discussed.

15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin