Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Local Wettability Reversal during Steady-State Two-Phase Flow in Porous
  Media   We study the effect of local wettability reversal on remobilizing immobile
fluid clusters in steady-state two-phase flow in porous media. We consider a
two dimensional network model for porous medium and introduce a wettability
alteration mechanism. A qualitative change in the steady state flow patterns,
destabilizing the percolating and trapped clusters, is observed as the system
wettability is varied. When capillary forces are strong a finite wettability
alteration is necessary to move the system from single-phase to two-phase flow
regime. For the case of both phases being mobile we find a linear relationship
between fractional flow and wettability alteration.

35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg