Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hydrodynamic of surge wave energy converters   Ocean wave energy is a new renewable energy resource which is going to become
one of the reliable and alternative resources for fossil fuels during recent
decades. The majority of studies have focused on extract wave energy at an
effective rate; whilst, there are a few studies to explore the hydrodynamic of
wave and surge wave energy converters. In this study a 2D numerical model based
on RANS equations is closured with SST turbulence model employed to simulate
the hydrodynamic of the flap type wave energy devices. The results indicate
that a partially standing wave induced by the interaction of incident and
reflected waves occurs in front of device due to its rotating movements.

1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
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
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph