Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the resolvability of the dynamics of one fluid flow via a testing
  fluid in a two-fluids flow model   In this work, by considering an isentropic fluid-fluid interaction model with
a large symmetric drag force, a commonly used simplified two-fluids flow model
is justified as the asymptotic limit. Equations for each fluid component with
an interaction term are identified in addition to the simplified two-fluids
flow model, which can be used to resolve the density of one fluid specie based
on information on density and the velocity of the other fluid specie, i.e., the
testing flow.

22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin