Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Numerical Simulation of Fecal Coliform Dynamics in Luruaco Lake,
  Colombia   The Luruaco Lake located in the Department of Atl\'antico, Colombia, is
damaged by the discharge of untreated sewage, bringing risks to the health of
all who use its waters. The present study aims to perform the numerical
simulation of the concentration dynamics of fecal coliforms in the lake. The
simulation of the hydrodynamic flow is carried out by means of a
two-dimensional horizontal (2DH) model, given by a Navier-Stokes system. The
simulation of fecal coliform transport is described by a
convective-dispersive-reactive equation. These equations are solved numerically
by the Finite Difference Method (FDM) and the Mark and Cell (MAC) method, in
generalized coordinates. Regarding the construction of the computational mesh
of the Luruaco Lake, the cubic spline and multiblock methods were used. The
results obtained in the simulations allow a better understanding of the
dynamics of fecal coliforms in the Luruaco Lake, showing the more polluted
regions. They can also advise public agencies on identifying the emitters of
pollutants in the lake and on developing an optimal treatment for the recovery
of the polluted environment.

32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
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The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex