Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Investigation of flow structures in a turbulent separating flow using
  hybrid RANS-LES model   Hybrid Reynolds-averaged Navier Stokes large eddy simulation (RANS LES)
methods have become popular for simulation of massively separated flows at high
Reynolds numbers due to their reduced computational cost and good accuracy. The
current study aims to examine the performance of LES and hybrid RANS-LES model
for a given grid resolution. For better assessment and contrast of model
performance, both mean and instantaneous flow fields have been investigated.
For studying instantaneous flow, proper orthogonal decomposition has been used.
Current analysis shows that hybrid RANS-LES is capable of achieving similar
accuracy in prediction of both mean and instantaneous flow fields at a very
coarse grid as compared to LES. Focusing mostly on the practical applications
of computation, most of the attention has been given to the prediction of
one-point flow statistics and little consideration has been put to two-point
statistics. Here, two-point statistics has been considered using POD to
investigate unsteady turbulent flow.

27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int