Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Arbitrary Lagrangian-Eulerian hybridizable discontinuous Galerkin
  methods for incompressible flow with moving boundaries and interfaces   We present a class of Arbitrary Lagrangian-Eulerian hybridizable
discontinuous Galerkin methods for the incompressible flow with moving
boundaries and interfaces including two-phase flow with surface tension.

22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin