Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chromodynamic multi-relaxation time lattice Boltzmann scheme for fluids
  with density difference   We develop, after Dellar (P. J. Dellar, Phys. Rev. E. 65, 036309 (2002), J.
Comput. Phys. 190, pp351 (2003)), a multiple-relaxation time (MRT),
chromodynamic, multi-component lattice Boltzmann equation (MCLBE) scheme for
simulation of isothermal, immiscible fluid flow with a density contrast. It is
based on Lishchuk's method (J. U. Brackbill, D. B. Kothe and C. Zemach, J.
Comp. Phys. 100, 335-354 (1992), S. V. Lishchuk, C. M. Care and I. Halliday,
Phys. Rev. E. 67(3), 036701(2), (2003)) and the segregation of d'Ortona et al.
(U. D'Ortona, D. Salin, M. Cieplak, R. B. Rybka and J. R. Banavar Phys. Rev. E.
51, 3718, (1995)). We focus on fundamental model verifiability but do relate
some of our data to that from previous approaches, due to Ba et al. (Y. Ba, H.
Liu, Q. Li, Q. Kang and J. Sun, Phys. Rev. E 94, 023310 (2016)) and earlier Liu
et al. (H. Liu, A. J. Valocchi and Q. Kang, Phys. Rev. E 85, 046309 (2012)),
who pioneered large density difference chromodynamic MCLBE and showed the
practical benefits of a MRT collision model. Specifically, we test the extent
to which chromodynamic MCLBE MRT schemes comply with the kinematic condition of
mutual impenetrability and the continuous traction condition by developing
analytical benchmarking flows. We conclude that our data, taken with those of
Ba et al., verify the utility of MRT chromodynamic MCLBE.

5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys