Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Numerical simulation of wave impact on a rigid wall using a two-phase
  compressible SPH method   In this paper, an SPH method based on the SPH-ALE formulation is used for
modelling two-phase flows with large density ratios and realistic sound speeds.
The SPH scheme is further improved to circumvent the tensile instability that
may occur in the SPH simulations. The two-phase SPH solver is then used to
model a benchmark problem of liquid impact on a rigid wall. The results are
compared with an incompressible Level Set solver. Furthermore, a wave impact on
a rigid wall with a large entrained air pocket is modelled. The SPH simulation
is initialised by the output of a fully non-linear potential flow solver. The
pressure distribution, velocity field and impact pressure are then analysed.

13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess